etrailer | Roadmaster Variable Voltage LED Tail Lights Wiring Kit Installation - 2021 Jeep Cherokee

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Hi there Jeep owners, Standard 2021 Jeep Cherokee, we're gonna be taking a look at and showing you how to install Roadmaster Smart Diode wiring kit for models that have LED lights. Our Smart Diode Wiring kit is gonna take the lighting signals from our motor home and transfer them here to the back of our vehicle so that the people behind us will know our intentions when we're flat towing our vehicle down the road. You can see that the hazard lights I've got them turned on in our motor home and as it flashes there, it also flashes here in the back and mimics the signal. Now it is gonna be a little bit different than your natural lighting when you're driving the vehicle around. The Jeep here, if it has the park sense, which we do have park sense on this Jeep here. It's required to have the smart diode kit instead of a regular diode kit.
With a regular diode kit, we can actually make the lights function very similarly to how they we're when you're driving the vehicle. But due to the park sense, it is special and pretty much the only way to get the lights to work here on this particular Jeep. So it uses the taillight circuit and it varies the voltage to that taillight circuit to give us all of those necessary lighting signals. We've got the brake light lighting up here where it's flashing, it's the same as the turn signal and that's the full intensity. If we turn on our taillights, this would change to a lower intensity, which would be similar to how it would be just on your vehicle.
Your taillights are gonna be lower when you hit the brakes, hit brights, it lights up brighter. Sometimes it's the same bulb, sometimes it's a different bulb. On our Jeep when you're driving it around normally, your brake light would be the center one here, but our smart dials give us the exact same functionality using the tail light that's right here. Because the main thing here is that we're getting all those signals here at the back of the vehicle, so everybody around us knows what's going on. Trying to keep ourselves safe and everybody around us safe by keeping everybody aware.
And I went ahead and turned the tail lights on here so you can see the difference between the bright and dim, going from tail light to full brake or turn signal light, and you can see the difference here between no light over here on this section versus the it's a little harder to see here during the day, but you can tell the difference between this is being lit up and this one not lit up at all. Diode wiring is my personal favorite style of modification to get our lighting signals here at the back of our vehicle. The reason why I liked the diode wiring is because it's a permanently installed component here that's hidden inside the vehicle, you don't even really know that it's there, there's kind of nothing that really tells you is there except for the connector that's at the front of our vehicle here broken up to our flat tow setup. And it makes it nice and easy 'cause to make our diodes work here after you installed them, you simply just plug your same way connector into your motor home and plug the other end into your vehicle here and they're up and running right after that. With other styles like your magnetic lighting, you have to get those out every time you want to flat tow.
So unlike this will just plug it in, I'm ready to roll, I got to get the box up, it's got my magnetic lights so I got to set it up on the roof, and then I gotta run the wire up to the front and it's not gonna look pretty when you're doing this the whole time, you're gonna have wires running across the top, there's pads on the bottom of the magnetic lights to prevent scratches and abrasions, but over time, those pads can wear out and you can get some abrasions up there on the roof. So with this you can avoid all that mess, it is a bit more of an install upfront to get those on, your main headlights they just set up there. This one, we are gonna stick a few components apart and write a little bit of wiring, but if you follow up with me here in the shop, I'll show you how to get it done, it's not nearly as intimidating as it may seem. And with the smart diodes, it really does kind of, everything's kind of nice and laid out for you to get that done. We'll begin our installation here at the back of the vehicle with the lift gate open. Now that's gonna reveal the two fasteners that's holding our taillight assembly in. We'll be removing these on each side, we'll take our T30 Torx socket. And we're gonna zip these out of here. Now with our fasteners removed, we'll take the assembly and you kind of wanna just rock i

[@richardvoran5514]

I have a 2019 Cherokee Trailhawk that I purchased already wired. It has Park Sense, but is wired in the traditional way, using two regular roadmaster diodes on each side. Everything, initially everything worked, but recently we noticed we have no tail lights when hooked up. Brakes and turn signals work fine. Tried changing out diodes, have rung out the wiring, even changed the front connector. After watching this video it seems Park Sense has some bearing on how lights should be wired. Please explain why…..
if I need to, I’ll switch over to the type diodes shown in this video.

[@etrailer]

We are not familiar with the issue that you are having. If you vehicle has LED taillights, we have seen issues if you are using a traditional kit that is not designed to work with LEDs.
www.etrailer.com/Tow-Bar-Wiring/Roadmaster/RM47ZR.html

[@MrYardbull]

Hi Richard I have same exact problem on my 2021 F150 I used the diodes recommend for Led lights no running lights on towed vehicle everything elseworked. Did you get it resolved?

[@jeremiahephrim5339]

I have a 2021 Jeep gladiator and purchased this same kit and when I followed this video and instructions and I only have the left brake light working and nothing else any help ?

[@etrailer]

You can try checking your ground and the factory fuses to be sure that nothing has blown. We usually will see partial functioning when the ground is not good enough.
www.etrailer.com/Tow-Bar-Wiring/Roadmaster/RM47ZR.html