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Hopkins Tail Light Wiring Kit Installation - 2015 Jeep Wrangler Unlimited

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How to Install the Hopkins Tail Light Wiring Kit on a 2015 Jeep Wrangler Unlimited

Today on this 2015 Jeep Wrangler Unlimited, we're going to review and install a Hopkins custom tail light wiring kit for towed vehicles. Part number HM56200. All right, this is what the wire harness looks like when it's installed on our Jeep. You can see it had its built in bracket here and a four pull cover for the four pull. Now, there's not much to see on this because everything else is installed inside the vehicle. Next, we'll go ahead and show you what all the parts that come with the kit. This is our main wire harness right here with diodes into converter, and you have two T connectors.

This one T connector with the green wire will go off to the passenger side. This T connector with the yellow wire will go off to the driver side. These are designed to match up with the factory connection points behind tail lights. A little closer look at our converter here. What happens is that our input from our four pull wire harness from the RV goes into here, then sent in turn sends the signal out to the T connectors into your tail lights.

When this is applied to the vehicle, this only sends power out to the tail lights. This in turn prevents power going through the rest of the vehicle. It only keeps it at the tail lights. Closer look at our four pull wire harness. It is a very long harness here with more than enough for our Jeep application. Four pull flat, we've got the three wires here.

You notice the white wire is a lot shorter. That's intended to be grounded at the front of the vehicle. To our four pull we have a cap that can be added to it. It just slips over the top. Some dielectrical grease to protect the contacts when it's not being used.

Also there's a holder for the four pull flat so you can screw into the bottom of your bumper or wherever you're going to have it installed. Lastly, self tacking screw for your ground wire. Also some zip ties to help secure the wires when it's underneath the vehicle. Now, chances are you may run out of zip ties and it's always a good idea to get some extras. Next, we'll go ahead and show you how we'll install this wire harness on our Jeep. We'll start off by removing the tail lights on our Jeep. We're going to remove these two screws using a Phillips head screwdriver. Looks a little confusing because there are a couple connectors here. We want the connection point that goes directly into the tail light bulbs here and here. Let's trace these back to this connector. We'll push down this tab and pull it apart. Now we'll go ahead and do the same process over on our passenger side. Behind our passenger side tail light, same thing applies. Push down on the tab and pull it apart. Now, we can go ahead and start working with the wire harness. I want to take the four pull end in the wire, and then route it through the opening here and you follow the lines or the gas tank line. Just below it there's an opening where you can run it right through there and out the bottom. Now, all of this is just a foam pad. If you need to pull it out and give yourself some more room you can. Now we're going to do the same thing with the T connector with the green wire. We'll take this T connector, plug it into the matching connection point until it clicks. Next, we'll go ahead and take the other half and plug it together so we have our circuit completed. Next, we'll go ahead and secure our converter. I'm just going to simply just bundle up the wires, hide it behind the converter, and I'm going to use a longer zip tie than what comes with the kit, and I'm going to zip tie it right to the harness. Now, at this point we can go ahead and put everything back inside and re-install the tail light. Let's go ahead and take this T connector and we'll route it over the frame, follow the factory wire harness for the four pull for the trailer hitch, and continue on over to the other side, and back up over the frame. Once I get past the factory wire harness for the four pull, I'm going to switch out to some longer zip ties and keep our wires as high as possible. Next, we're going to remove a panel underneath the tail light. Now, on the inside it's covered up with some foam insulation, so we may have to peal back a little bit of that to get a little bit easier access to it. We're going to take my mallet and with just the wooden handle part, I'm just going to use that to push up on that plastic piece there, until you pop it loose. We'll go ahead and get it held in position and on this side here, we'll go ahead and put a small notch in it for the wires. I'm just going to use a rotary tool to grind out a small section. With the notch made, we'll go ahead and take our wire harness, and push it up from the bottom and out the top. We're going to put this cap back in place with our wires routed through. All right, now let's go ahead and plug our T connector into the factory wire harness. We'll let that sit for now. I want to take the rest of my wires and I'm going to bundle them up and zip tie them to the factory wiring harness. Cut some of our excess zip tie, and we'll plug this back into our tail light, and our tail light can go back inside. Next up, is our four pull wire harness. We'll go ahead and route that towards the front of the vehicle. Now, when we do that we want to make sure we stay away from anything moving like suspension components or anything hot like the exhaust. It's a bit hard to see, but I took my four pull wire harness, started from the opening underneath the tail light, ran across the top of the frame, ran it over the cross members, pulled it out so you can see it, ran it over top the cross members, and just stayed over all the lines and the other cross members, following the brake lines, all the way up towards the front until about right here where I went over the frame and stayed on the outside of the frame until about to the fender well and ran straight up. Once I got up to the top here, and ran it down towards the front, I took my excess wire and bundled it up right here. Sometimes your supplementer braking system needs access to the wires so it's always a good idea to keep them handy if you ever need them. We ran our wires along the washer fluid bottle, along the front here, guided it, zip tied it wherever we could, and there's a small opening right here. You have to go at kind of angle and it's a tight fit for a four pull to fit through, but we ran it through here behind the grill and then down towards the bottom. Now, we can hide some of our wire right here behind this panel. We'll go ahead and use a trim panel tool to open these up. Now let's put the panel back in place. After we ran our wire down below the grill, it's pretty wide open underneath there, and we just slipped our wire beneath the plastic fascia here. I removed one of the plastic rivets, which is really easy. Just pull out the center and it comes apart. We just simply pry it down, pull your wire, and your four pull through. After we have it pulled through, we can go ahead and put the plastic rivets back into place. We pulled out this plastic rivet here and this one here to make it easy. Here's our ground wire, and this piece of metal right here is connected directly to the frame, so we can go around right to this. We used a self tacking screw that comes with the kit along with a quarter inch nut driver. Now we'll go ahead and mount the four pull end to the bumper on the Jeep. We'll use the holder and the four pull cover. We'll put the cover on first. Now, the cover will fit into the groove. We'll put it onto one half and make sure the cover here goes into this little groove right here made for it, and we'll push it together, and we'll squeeze it together. There's a couple pins in there as a friction fit that'll help hold it in place. Take up some of the slack, put it where we want it. Now, this is a personal preference. You may want to put it off to one side or the other. In this case, I'm just going to be putting it in the center right here, so I'll take the long screws that come with it. I'll run it through these oval slots and into our bumper. Now we'll need a Phillips head screwdriver for this. One of the last things to do for our install is to go ahead and take the cover off and use some of the dielectric grease that comes with the kit to help protect the contacts. We have everything hooked up, we'll go ahead and try it out. Now you want to go ahead and plug this up to your RV and make sure everything worked. I don't have an RV with me right now, so I'll just go ahead and apply power on my own and I can demonstrate how it works. You'll take your four pull wire harness from your RV and plug it in, and we'll go ahead and check the lights in the back. First we'll go ahead and try out the running light circuit. You can see how the tail lights come on. I'll turn those off. Next, we'll try the right turn signal. Now we'll go ahead and try the left turn signal. Now, brakes are going to use the same signal as the turn signals, so we know that's good since both turn signals work. Now, to finish it for the Hopkins custom tail light wiring kit for towed vehicles, part number HM56200 on this 2015 Jeep Wrangler Unlimited.

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