Measurement Specs on the new GTR Lighting GEN 2 LED Headlight Bulbs

There’s a new LED headlight product out there that people are getting really excited about because it’s an LED bulb bright enough to be used in your fog lights or your headlights, and it’s not built like an HID conversion kit. The new GEN 2 LED Headlight bulbs by GTR Lighting have 2 really unique things going for them:

1. They are “All-In-One” which means there’s no external driver or ballast.

2. They come with 5 different color shields that allow you to have 6 different colors of light output!

These two benefits listed above also come with their own problems:

1. Because the LED driver is built in and the bulb is “all-in-one” it’s actually taller than the old style with the external driver even though the bulb part is shorter.

2. Because they have hot-swappable color shields when you’re using one it adds a little bit of size to the diameter of the light emitting portion, thus making it not work with the color shields installed in some applications. If your car has a tight fit for the bulb opening, you might only be able to use these bare, without the color shields. Here are some pictures to demonstrate:

Here you can see a side by side comparison of the GEN 1 LED Headlight bulbs (left) and the GEN 2 LED headlight bulbs (right).

Here you can see a side by side comparison of the GEN 1 LED Headlight bulbs (left) and the GEN 2 LED headlight bulbs (right).

Here you can see the underside of the two bulbs. The one with the silver metal fan is the original kit and has a much larger diameter than the new bulbs.

Here you can see the underside of the two bulbs. The one with the silver metal fan is the original kit and has a much larger diameter than the new bulbs.

This picture again shows the GEN 1 (left) versus the GEN 2 (right) and you can see the bulb base is smaller on the new bulbs, but the bulb length is longer also. This fixes one problem of having a large base, and potentially raises a new concern of the bulbs being too long to fit some applications. It's more important to have a smaller diameter than a short length, so the new design will definitely fit more applications.

This picture again shows the GEN 1 (left) versus the GEN 2 (right) and you can see the bulb base is smaller on the new bulbs, but the bulb length is longer also. This fixes one problem of having a large base, and potentially raises a new concern of the bulbs being too long to fit some applications. It’s more important to have a smaller diameter than a short length, so the new design will definitely fit more applications.

Here you can see all of the measurements from the GTR Lighting GEN 2 Dual Beam Headlight Bulbs.

Here you can see all of the measurements from the GTR Lighting GEN 2 Dual Beam Headlight Bulbs.

The new GEN 2 dual beam LED headlight bulbs from GTR Lighting are actually larger than the old style when you have a color shield installed, but this isn’t really a concern with the dual beam bulbs because housings for this style of bulb are huge. If for some reason you do run into a fitment issue with the dual beam bulbs (a very rare problem) you can always remove the color shields to gain some space and run them at 5,000K color.

The single beam bulbs from the new GTR Lighting LED conversion kit lineup come in 2 sizes: the larger styles like H11, 9005, and 9006, and the smaller styles like H1, H3, and 880.

Here are the sizes of the larger single beam styles:

Here you can see all of the measurements from the GTR Lighting GEN 2 Single Beam Headlight Bulbs.

Here you can see all of the measurements from the GTR Lighting GEN 2 Single Beam Headlight Bulbs.

Here are the sizes of the smaller single beam styles:

How to install 9004 or 9007 LED Headlight bulbs from GTR Lighting

OK, so I got my hands on a set of the 9007 LED headlight bulbs from GTR Lighting and I wanted to show you how to install them because at first glance it looks kind of tricky.

GTR Lighting GEN 2 9007 LED Headlight Bulb Install

 

The vehicle I’m going to demonstrate on is a headlight from a 2002 Ford F250. This is a very common headlight and I will tell you this: These headlights suck!!! No matter which types of bulbs you use, high power halogen, HID or new LED style headlight bulbs, these housings are awful and it’s impossible to get amazing light output from them. Your best bet for amazing light is a light bar or a projector retrofit… but that’s a whole other story! For now we’re going to try to put these GEN 2 9007 LED Headlight Bulbs from GTR Lighting into these housings.

The original 9007 halogen bulb is held in place by a retainer. In the case of this Ford F250, the retainer is very tall. Sometimes they are snort and sometimes they are tall, but they all work the same way. The retainer goes on top of the bulb and holds it in place.

The original 9007 halogen bulb is held in place by a retainer. In the case of this Ford F250, the retainer is very tall. Sometimes they are snort and sometimes they are tall, but they all work the same way. The retainer goes on top of the bulb and holds it in place.

Here you can see how the original halogen bulb sits when you take the retainer off.

Here you can see how the original halogen bulb sits when you take the retainer off.

The new GTR Lighting GEN 2 LED Headlight Bulb is a little longer than the original halogen bulb, but it doesn't matter for this application because there is nothing inside the housing to interfere with it. The mounting method is identical. The new LED bulb has the same mounting collar as the halogen bulb.

The new GTR Lighting GEN 2 LED Headlight Bulb is a little longer than the original halogen bulb, but it doesn’t matter for this application because there is nothing inside the housing to interfere with it. The mounting method is identical. The new LED bulb has the same mounting collar as the halogen bulb.

Here's an aerial view showing the slots in the mounting collar between the original halogen bulb and the new GTR Lighting LED headlight bulb. They insert into the headlight housing the exact same way as each other.

Here’s an aerial view showing the slots in the mounting collar between the original halogen bulb and the new GTR Lighting LED headlight bulb. They insert into the headlight housing the exact same way as each other.

The housing for either a 9004 or a 9007 will have 3 alignment tabs inside like this. The bulb will only seat one way.

The housing for either a 9004 or a 9007 will have 3 alignment tabs inside like this. The bulb will only seat one way.

This is how the new 9007  LED headlight bulb should seat when you have it resting on the housing. There should be no gaps, it installs perfectly flat.

This is how the new 9007 LED headlight bulb should seat when you have it resting on the housing. There should be no gaps, it installs perfectly flat.

The original retainer that held the halogen bulb in place will likely NOT fit over the top of your new LED headlight bulbs, they are far too large to facilitate the heat sink and cooling fan.

The original retainer that held the halogen bulb in place will likely NOT fit over the top of your new LED headlight bulbs, they are far too large to facilitate the heat sink and cooling fan.

The mounting collar on the LED headlight bulbs comes off easily by twisting it. Separate all the parts and re-install the original headlight bulb retainer between the heat sink of the LED bulb, and the mounting collar.

The mounting collar on the LED headlight bulbs comes off easily by twisting it. Separate all the parts and re-install the original headlight bulb retainer between the heat sink of the LED bulb, and the mounting collar.

 

When you have the original mounting adapter installed between the heat sink and the LED bulb collar, then you can install everything like the factory bulb was installed.

When you have the original mounting adapter installed between the heat sink and the LED bulb collar, then you can install everything like the factory bulb was installed.

Here are a couple notes about the final install:

1. If you have a tall mounting adapter like shown in these pictures, it may be a good idea to either drill holes in it to allow the LED bulb fan to “breathe” and flow more air to keep it cool, or just trim the excess material off to allow the LED heat sink fan/bulb to be fully exposed.

2. In order to get the LED bulb and mounting adapter fitted to the housing there are several things to line up and it can be a tricky puzzle! Just examine it and see how everything fits together. The housing has alignment posts, the LED bulb collar has 2 alignment posts, and the mounting adapter for the original bulb has 2 sets of alignment posts!!! Everything has to be put together just right.

3. This install guide is specific to the early 2000’s Ford trucks that use 9007 or 9004 headlights, but the basic premise should be universal to anyone trying to install 9004 or 9007 LED headlight bulbs.

Instructions on How to Install Vision X End Cap Mounts

If you have a mount for your car or truck that’s designed for end-cap style light bar mounts, but you want to use a Vision X LED Light Bar there is a solution! Vision X invented a really nice low-profile mounting system that works by adding “feet” to a track system below the light bar and there’s nothing on the end caps. If you need to mount your Vision X light bar on the end caps you need the End Cap Mounting Kit sold here, just make sure you get the right one for your light bar!

This is how Vision X LED light bars normally mount. With feet underneath the bar on a rail system.

This is how Vision X LED light bars normally mount. With feet underneath the bar on a rail system. This style will not work with most aftermarket offroad bumpers or roof mount bracket kits.

Many light bars use end-cap mounts with a stud coming out to attach to the vehicle. If your light bar mount is designed for this style of light bar but you want to use Vision X you need to add the end-cap mounting kit.

Many light bars use end-cap mounts with a stud coming out to attach to the vehicle. If your light bar mount is designed for this style of light bar but you want to use Vision X you need to add the end-cap mounting kit.

Vision X makes 3 different end-cap mounting kits so you can transform Vision X LED offroad light bars into end-cap mounting styles to work with popular light bar mounting products like grilles, bumpers and roof mounts.

Vision X makes 3 different end-cap mounting kits so you can transform Vision X LED offroad light bars into end-cap mounting styles to work with popular light bar mounting products like grilles, bumpers and roof mounts.

First Step: Choose the appropriate mounting kit for your application:
XIL-LPECM works with the new XPI series light bars (e.g. XPI-27M) and also works on the Low-Pro Xtreme LPX Series (e.g. XIL-LPX3910) LED light bars.
XIL-PECM works with PX series (e.g. XIL-PX9040) and EP series light bars(e.g. XIL-EP1220).
XIL-ECM works with the standard Xmitter series LED light bars like XIL-400 or XIL-120.

Second Step: Remove the 2 allen head bolts on each bottom corner of the light bar. These bolts are the larger ones that hold the rod in place that passes through the entire body of the light bar. That rod holds the mounting feet in place for the traditional mounting method. DO NOT remove the end cap to take the rod out. You will likely not be able to re-seal the light bar properly and you will void your warranty! When the one allen-head bolt on each side of the bar is removed, that’s where your end cap mounting kit will go:

One allen-head bolt on each end cap needs to be removed. This is where the new bolt mounting kit installs on the light bar.

One allen-head bolt on each end cap needs to be removed. This is where the new bolt mounting kit installs on the light bar.

Step 3: Tighten each mounting stud until they are very tight on each side. You don’t want them to be able to spin at all. If you’re working with a long light bar like 40″ or 50″ you might need help, one person on each side. Congratulations, now you’re ready to install your Vision X light bar with an aftermarket mount designed for a light bar that comes with end-cap mounts!

The end cap kit comes with all the required hardware and allows you to mount a Vision X LED light bar with end-cap style vehicle mounts.

The end cap kit comes with all the required hardware and allows you to mount a Vision X LED light bar with end-cap style vehicle mounts.

 

WARNING! If you try to install the end cap kit in the wrong holes, you WILL break the end cap mounting kit and possibly damage your light bar! Follow the above steps and instructions to avoid this kind of damage:

How to install Vision X end cap mount

This picture shows the right way and the wrong way to use the Vision X end cap mounting kit! If you try to install the end cap mounting adapter into the middle hole(s) it will not insert deep enough and it will damage the bolt and light bar. You must use the larger bolt hole in the corner of the end cap that connects to the rod going all the way through the body of the light bar.

This picture shows the right way and the wrong way to use the Vision X end cap mounting kit!
If you try to install the end cap mounting adapter into the middle hole(s) it will not insert deep enough and it will damage the bolt and light bar. You must use the larger bolt hole in the corner of the end cap that connects to the rod going all the way through the body of the light bar.

How to install a Royalty Core Light Bar Truck Grille

Lots of people see these new grill replacements for their trucks for sale and on cool truck builds but they don’t really have a good understanding of the logistics of how to install them. You either don’t know at all and won’t buy the product due to uncertainty, or you buy it without thinking how it works and regret it because you can’t figure it out.

There’s a new video out explaining a lot of information about these steel mesh aftermarket grilles for trucks and how to do the install. Here’s the video detailing how to install a Royalty Core grille replacement on a Toyota Tundra using Vision X LED offroad light bars:

The first and most important thing most truck enthusiasts probably don’t know is that you have to cut out the center section of your original grille first, in order to install the new one. On some vehicles that middle section will just pop out and there’s no cutting involved, but most of the time you’re not that lucky!

This is what the grille on the Tundra looked like before being cut up to fit the Royalty Core grille.

This is what the grille on the Tundra looked like before being cut up to fit the Royalty Core grille.

This is what the Tundra grille looked like after being modified. The middle is cut out so the new grille insert can fit in place properly.

This is what the Tundra grille looked like after being modified. The middle is cut out so the new grille insert can fit in place properly.

Once you have the original grille removed and the center section cut out, if you do it properly the new aftermarket steel mesh grille should fit in place. To hold it in place the new grille should come with some type of mounting mechanism. The Royalty Core grilles come with a bolt and anchor type attachment that works really well:

Royalty Core grilles have some of the best mounting hardware on the market. This method makes it very easy to install.

Royalty Core grilles have some of the best mounting hardware on the market. This method makes it very easy to install.

Royalty Core grilles have some of the best mounting hardware on the market. This method makes it very easy to install.

Royalty Core grilles have some of the best mounting hardware on the market. This method makes it very easy to install.

When you get the new grille insert in place then it’s time to install the light bars. Most of the time they will come packaged separately and it’s up to the installer to mount the lights. This is good because the lights add a lot of weight to the product and can make the grille hard to handle.

The LED light bars mount to the back side of the grille so just the face of the light is showing.

The LED light bars mount to the back side of the grille so just the face of the light is showing.

Royalty Core uses Vision X brand of LED light bars. This is because Vision X has the world's brightest light bars: more than double the light output of any other company, light bar per light bar.

Royalty Core uses Vision X brand of LED light bars. This is because Vision X has the world’s brightest light bars: more than double the light output of any other company, light bar per light bar.

When the light bars are mounted and aligned to the grille you can re-attach the truck grille to the truck. Now that the grille is heavier than it was at first it’s a good idea to get some help!

Re-attach the grille to the truck.

Re-attach the grille to the truck.

With the new grille mounted to the truck and secured using all the factory mounting points it’s time to run power wires to the light bars. The best way to do this is to start with a universal relay harness, wire it to the battery and to a switch inside the vehicle, then safely through the firewall and up onto the hood and finally connected to the new light bars.

Drilling a hole in the dash and mounting a switch; passing wires through the firewall; connecting power wires to the battery; and running power wires up onto the hood all require a fair amount of skilled installation ability. If you don’t understand already how to wire in a relay harness either hire a professional to do it or research the safe methods and learn how to do it yourself. Just be warned that this is definitely considered custom electrical wiring installation.

Run new wiring from a switch inside the cab, into the engine bay and safely up and onto the hood to power the new lights.

Run new wiring from a switch inside the cab, into the engine bay and safely up and onto the hood to power the new lights.

The way the install was done on this particular truck grille was to use a set of GTR Lighting LED Halo style in-dash switches. These are some of the nicest looking switches around and fit in most spots on the dash.

Custom mounted halo switches from GTR Lighting.

Custom mounted halo switches from GTR Lighting.

At the top of this post there’s a video to show all of this information in more detail. It’s about 20 minutes long but really goes in depth on the ins and outs of this type of install. Before you decide which grille to purchase, and if you can handle the job yourself check it out. Or click here to watch the video now.

2010 Toyota Tundra featuring a Royalty Core steel-mesh grille with a pair of Vision X LED offroad light bars installed.

2010 Toyota Tundra featuring a Royalty Core steel-mesh grille with a pair of Vision X LED offroad light bars installed.

How to install an LED light bar on the roof of my truck?

If you are like most off-road and truck enthusiasts, one of the things you’re probably REALLY interested in is installing LED lighting. This whole market of upgraded lighting has exploded in the last 2 years and everyone is very eager to get their truck’s upgraded as soon as possible! One thing that has become a trend though in the last few months is redneck style roof mounting… You’ve probably seen it done where you live and heck, maybe you’ve done it yourself.

The white truck in this picture mounted the light bar on the roof incorrectly. The black truck is done right.

The white truck in this picture mounted the light bar on the roof incorrectly. The black truck is done right.

Now, don’t get me wrong – I hate the look, but I can’t blame some people! They buy a 50″ light bar for their truck and it comes with brackets – so you mount it on your truck, right? I believe the secret to successful lighting upgrades is education, so I’m going to show you the right way and the wrong way to install a roof mount light bar on your truck, the biggest trick is getting a hold of a vehicle specific roof mount kit. If you installed your light bar like this, then you did it wrong:

THE WRONG WAY:

When you use the “universal” brackets that come with the light bar and just mount them to the top of your roof skin it LOOKS STUPID! Don’t do it! These “universal” brackets are a cheap way to mount your light bar, and then guess what happens – your truck looks cheap!

Listen, I don’t mean to belittle your manhood because you didn’t know any better, but now you don’t have any excuse. Let me show you the proper way to mount a light bar to your truck, it’s important to find a good vehicle specific light bar bracket kit, or fabricate something that works the same way, the end result should be something like this:

THE RIGHT WAY:

GMC Canyon Roof Light Bar Canyon LED Roof Mount Light BarOn this Canyon, a set of N-Fab roof mount light bar brackets were used for the install. The first thing you’ll notice is that it looks better than the first set of pictures. Getting the light bar up and off of the roof makes the whole setup look great. Secondly it allows you to position the light bar in a more usable way. Getting the light bar up and away from the roof allows the light bar to not be blocked by the roof skin right in front of it.

Here’s another example on another vehicle of how to properly mount an LED Light bar on the roof of your truck:

Vision X XPI LED Light Bar

XPI light bar has two sets of holes on each side that both bolt on the mounting feet. Since we’re doing a roof mount, we got to choose which hole to use and decided on the top one. That brought the Light Bar closer to the roof.

Vision X XPI LED Light Bar Roof Mount install

Vision X XPI LED Light Bar roof mount install completed.

 

photo 2 (1)Probably the best way to find out which vehicle specific light bar bracket to use is to first contact Headlight Revolution. They know what works and what doesn’t and can definitely get you set up with not only a light bar bracket, but also the right mounting and wiring components to make it all work.

 

Wiring: When you get the light bar properly mounted to your roof, and all the holes are sealed to become waterproof, it’s time to run your wiring. DO NOT just run the wiring loosely through the door jam.  The best way to do this is to drill a new hole in your roof near your roof mount brackets and run the wiring down directly into the cab of the truck. This is the best method because it is the shortest distance for the wire to travel, and it has the least chance of getting smashed in your door jamb.

Drill a hole in the roof, run your wiring through that hole and seal it up with waterproof silicone.

Drill a hole in the roof, run your wiring through that hole and seal it up with waterproof silicone.

Drill a hole in the roof, run your wiring through that hole and seal it up with waterproof silicone.

Drill a hole in the roof, run your wiring through that hole and seal it up with waterproof silicone.

 

However, if you’re really not sure how to do the install, you should either be prepared to drill holes in your roof as a learning experience, or hire a local professional install shop to do it for you.

If you need any help with what bracket kit you need for you truck, just ask!

2002 – 2006 Dodge Ram 9007 LED Headlight Kit Install Writeup – DIY How To

For a long time it was known that the only way to do a plug and play lighting upgrade on the 2002 – 2006 Dodge Ram was to either use higher power halogen bulbs, or an HID conversion kit with a bunch of extra parts like resistors, a relay harness and capacitors. Because of this every time I heard about someone working on one I would get scared and not even want to help with it – it is an AWFUL install! Now with the invention of LED conversion kit bulbs and CANBUS modules for them, we decided to give this difficult vehicle a shot to see if we could install LED conversion kit bulbs easier in a 2003 Dodge Ram with 9007 headlight bulbs. Doing this install (once wired properly) proved to be a truly plug and play experience with no flickering and no “LAMP OUT” warning on the dash!

Using a GTR Lighting LED Conversion Kit and the matching CANBUS module we were able to get LED headlights installed pretty easily!

Using a GTR Lighting LED Conversion Kit and the matching CANBUS module we were able to get LED headlights installed pretty easily!

This particular truck was dated September of 2003 and used 9007 bulbs.

The first step was to get the new LED bulbs to actually fit inside the housing! Because the base of the bulb that holds the fan and heat sink is so much larger than the original bulb we had to use a bench grinder and shave about .25 inches off of the gray plastic retaining ring to allow everything to seat correctly. This took a few minutes and just took a little off at a time, tested it and kept doing that until it all fit together nicely.

The LED bulb comes apart. There's the bulb adapter that comes off and is secured to the housing by the gray plastic retaining ring, and the entire bulb assembly. We had to modify the plastic retainer before the new LED bulb would fit in place like the original.

The LED bulb comes apart. There’s the bulb adapter that comes off and is secured to the housing by the gray plastic retaining ring, and the entire bulb assembly. We had to modify the plastic retainer before the new LED bulb would fit in place like the original.

The 9007 LED Headlight Conversion kit bulbs are much larger on the back side than the original 9007 halogen bulbs.

The 9007 LED Headlight Conversion kit bulbs are much larger on the back side than the original 9007 halogen bulbs.

After getting the bulbs to seat properly in the housing we took the GTR Lighting CANBUS module for 9007 out of the packaging and hooked it up straight away and the capacitor inside the module popped! The module actually exploded!! I’m not kidding – a little pop, some wet stuff came out and the little thing stunk to high heaven and smoked for a second. This wasn’t all too surprising though since when you hook a capacitor up backwards it will explode. That’s exactly what happened – the capacitor inside was wired wrong for this truck and exploded. So, after that excitement we took a new set of 9007 CANBUS modules and re-wired them so that everything looked like this:

 

This is how the bulb was installed: The CANBUS module is between the bulb and the vehicle harness.

This is how the bulb was installed: The CANBUS module is between the bulb and the vehicle harness.

This is the connector going from the 9007 LED Headlight into the 9007 CANBUS module. We had to change these wires around to make them work.

This is the connector going from the 9007 LED Headlight into the 9007 CANBUS module. These wires were correct from GTR Lighting.

This is the connector back side of the 9007 LED CANBUS module input. We had to change these wires around to make them work.

This is the connector back side of the 9007 LED CANBUS module input. We had to change these wires around to make them work.

This is the connector back side of the 9007 LED CANBUS module output that plugs into the factory wiring. We had to change these wires around to make them work.

This is the connector back side of the 9007 LED CANBUS module output that plugs into the factory wiring. We had to change these wires around to make them work.

Just for reference sake, here's what the back side of the original factory connector looked like.

Just for reference sake, here’s what the back side of the original factory connector looked like.

 

So, all in all we got it to work after thinking about it and how to re-wire the CANBUS modules, and they’re definitely brighter than the stock headlights. Because they are LED they should be more reliable also.

Here you can see the new GTR Lighting LED bulb in the headlight housing.

Here you can see the new GTR Lighting LED bulb in the headlight housing.

Here's a final install shot showing the new 9007 LED Headlights from GTR Lighting in high beam mode.

Here’s a final install shot showing the new 9007 LED Headlights from GTR Lighting in high beam mode.

How to Remove Radio Interference Using Ferrite Coils for HID and LED Headlights

Many people nowadays are installing aftermarket HID and/or LED conversion kits in their headlights and fog lights. These new conversion kits use an external power booster, called a Ballast for HID setups and a Driver for LED setups. Both of these external power supplies do similar functions, but technically they are quite different. Also, both of these products create RFI (Radio Frequency Interference); in fact every electronic device ever made creates RFI, but there are different types of this electrical interference. Sometimes when installing an LED conversion kit or an HID conversion kit in your vehicle the result can be better, brighter light, but also a side effect of AM or FM radio interference. This is characterized by where you once were able to pick up a radio station, with the new lights installed and turned on, now that same radio station is just white noise.

Here is an example of a DIY ferrite coil that can be used in lighting installs.

Here is an example of a DIY ferrite coil that can be used in lighting installs.

The solution for your problem might be what is called a ferrite coil, also known as a ferrite bead, a ferrite choke, or an RFI choke. All of these names mean the same thing. Ferrite beads prevent interference in two directions: from a device or to a device. A conductive cable such as the input power for the HID or LED headlight bulbs acts as an antenna – if the device produces radio frequency energy, this can be transmitted through the cable, which acts as an unintentional radiator. In this case the bead may be required to reduce RFI. Conversely, if there are other sources of RFI, such as an ignition module or battery charging alternator, the bead prevents the cable from acting as an antenna and receiving interference from these other devices.

Ferrite coils are already used in everyday household uses. You can find them on USB cables, power cords for your television or home stereo, and even on input power cables on your automotive satellite radio:

Ferrite coils are commonly used in household electronics to reduce interference signals.

Ferrite coils are commonly used in household electronics to reduce interference signals.

LED Conversion Kits Small Ferrite Coil:

For an LED Headlight conversion kit you can use a large ferrite coil and wind the input power wires around it, or you can use a small ferrite coil, and just clamp it over the power cable:

LED Conversion Kits Large Ferrite Coil:

 

HID Conversion Kits Small Ferrite Coil:

For the HID conversion kits you can put a smaller ferrite choke around the power input cable of the ballast like this:

HID Conversion Kits Large Ferrite Coil:

For the HID conversion kits you can put a larger ferrite choke around the power input cable where the small wires are exposed. This allows you to wrap the wiring around the choke for a better result. This is how to install the larger ferrite coil:

Sources for Ferrite coils:
Large style designed for looping wires around coil: RND-6 ( Wurtz number 7427151 ) snap on chokes
The inside hole size is 0.57″ (over 1/2″, 14.5 mm)

Small style designed snap onto power input cable: RCT2 RFI Radio Frequency Interference Ferrite Chokes – Black
measures approximately 1.25 x .75 x 75 inches