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Trailer Wiring Harness Kit Installation
Custom Fit Vehicle Wiring
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Installation of a Trailer Wiring Harness Kit
Today we are going to be installing the trailer wiring kit part number TL-29BK. Okay the first thing we are going to do before we get started is to go ahead and figure out a way that we want to route our 4-pole wiring harness back to our tail lights. On this particular trailer, we have got a nice long center tube here that is hollow so we are going to route our wires through there. Then we will T it off back towards the back to feed both of our tail lights and our side markers. You will notice that the harness itself is a wishbone type harness which means that it has got a single ground and you have got your running wire and right turn combined and then your running wire and left turn combined. So that you can T them off and split it down each side of the trailer.
Here at the rear of the trailer we have got brackets to mount our tail lights to. And then for our side markers we are going to go a little bit more forward on the trailer. We are just going to put them pretty much equally between the axle and the front of the trailer. Now that we have determined how we want to route our wires and where we are going to mount our lights at, go ahead and start feeding our harness through. I am going to take a steel fish tape, feed it through my center tube here. And with the tape pulled through, we can just take our two ends and tape it to it. And pull through just enough to where we have an even amount with the ground wire. And next we can go ahead and ground our ground wire.
We are just going to go ahead and ground it to the front of the tongue here to a nice, clean, metal surface. If there is some rust or even paint on the trailer, it might be a good idea to go ahead and scrape that down a little bit before we mount our ground wire. I am just going to take a self tapping screw and use that as my grounding point. And since the ring terminal that comes on our ground wire is a little bit too large for that self tapping screw, I am going to go ahead and cut that off and replace it with a smaller one. And then to insure that the wires stay the same length equal with my ground wire, I am just going to pull them tight and just put a little piece of tape there to hold them together. Okay, here with the center of the tube, we can start T-ing off our wires. Again we want the yellow and the brown to go over here on the driver side. Green and brown over to the passenger side. You need to find a way to get the brown wire back up to the front where we are going to mount our side marker light. You can either take an extra piece of brown wire and slice it in to your brown leads and feed it up to here or giving that this is a small trailer and we have plenty of wire, I can actually take and bring it up to here where we are going to mount our light and then we can just kind of continue it back to our tail light. So what I am going to do is take my side marker and basically mount it to the hole that I have here. Again, if you do not have a preexisting hole in the trailer, you can go ahead and drill those out. Go ahead and take and pull the loose end of the wire out.
And the stud that you secure the side marker with is actually the grounding stud as well so it kind of has a dual purpose there. I am going to go ahead and take my lead and kind of secure it to this cross bar here. And then what I will do is open up a section in the wire combination here. We will take a scotch lock, the two wires, crimp that down, and our connection is made. From there we can again continue on and feed our wires back to the tail light itself. The installation kit provides these frame clips that we can use on angle iron pieces like this one here to help hold the wire in place. Take the barbed end, that over the metal. I think what I will do is go ahead and run a few clips, bring the wire back to the center, and then continue it back to the tail light there. And then we just want to repeat that procedure for the passenger side side marker as well. Okay, and now that I have got both sets of wires routed back to the middle here, we can continue them back through the rear cross member which is equal with what our tail light brackets are. So at that point we can split them and run them through there respective lights. And then we just want to repeat that procedure for the passenger side. Okay, now we are over here to the rear tail light. You will notice in the back of the tail light here, that there are no wires coming out, but there are four holes at the back. Those holes are what we are going to be using as our connection point to the tail light itself.
Actually there is an existing hole here in the bracket that I am going to feed the wires through. And that is going to allow me to get to the back of tail light assembly. From there we can see we have an extra length of wire, so we can go ahead and cut it down. We are going to take and separate the two wires and we will strip a little of the jacketing back. And you will note on the back of the tail light itself that it is labeled on which side you want to put the wires in. There is two holes available for each wire. So you have the availability to plug two wires in for each function. Over here to the left side you can see we have got the stop and turn which is going to be our yellow wire. Then over here we have got the tail light wire which is brown. With the wiring stripped back we just want to go ahead and it into the back of the tail light into the coinciding color that it was specified. We can take the stripped off end and just push it directly into the hole and there is a little clip inside of there that grabs the wire. You see I cannot pull it back out. There is a little recession here that we can place the wires inside and that will keep them from getting pinched when we it into the bracket itself. We need to make sure that these brackets are mounted directly to the frame work of the trailer other wise you will not get a substantial ground coming through them. And we can just tighten those down. And we just want to do the same thing over here on the passenger side. This will conclude the installation of trailer wiring kit part number TL-29BK.
Questions About Part TL29BK
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