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Roadmaster Tow Bar Wiring Kit Installation - 1995 Pontiac Sunfire

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How to Install a Roadmaster Tow Bar Wiring Kit on a 1995 Pontiac Sunfire

Today on this 1995 Pontiac Sunfire, we're going to be installing the Roadmaster Universal Wiring Diode Kit product number RM-154. We're going to start off at the front of our Sunfire here where the tow wire would be attached. We'll take the 30-foot lead of wire that comes with our kit where we want to find a suitable mounting point for the one end and I'm just going to tie it off to the actual base plate kit for the time being. There are several mounting brackets available to go ahead and mount this to the vehicle if you'd like. This is actually going to connect to the tow vehicle. And it will go ahead and take the rest of the lead routed all the way underneath the vehicle back to the rear tail lights where we'll hook into our wires.

Now as you route the wire back underneath the vehicle back to the tail lights we just want to make sure that we avoid any possible hot spots or pinch points that could potentially damage the wire. Now that we've got our wire fed all the way back to the rear bumper, we're going to go ahead and now and find a route to take it up into the trunk area where we can access the wires for the tail lights. If you look here, we're actually going to take it up between the opening and between the body and the bumper here. Once we get up there we're going to locate an access point to actually get inside the trunk. So we're up on the top side of the bumper now and again, we need to get it inside the trunk itself. There's probably enough lead wire where you can--if you want, you can go ahead and locate an existing grommet on one of the side walls and go ahead and feed the wires into the trunk.

I'm going to go ahead and drill a hole in through on to the back wall of the trunk well here. And I've actually got a 1/2-inch grommet that I'm going to be using once I drill the hole. I'm going to start by using a 1/4-inch pilot bit and then go ahead and enlarge it with the 1/2-inch. If you are to drill a hole, again, you just want to make sure that you're not going to be drilling in any structural components or into any wiring harnesses. Ok, with the grommet put into the drilled hole, I'm actually going to go to the end of the wire here and go ahead and cut-off the 4-pole end. These wires are actually going to be wired directly into the diodes that are provided with the kit, so we won't actually need the 4-pole end. We're going to go ahead and take the four wires here and connect them to the wires on the vehicle.

Now since we're over here close to the passengers side already, we're going to do most of our connecting over here, do it on the back of the tail light, there are three wires coming out from the tail light here. We've got a green wire which is our right turn and we're actually going to connect our green wire here directly to that wire. The brown wire here is our running white lead that's going to actually going to coincide with the brown wire that we have here on our lead for our diode system. The black wire's a ground, and actually on our lead this white wire is the ground, but we're going to go ahead and ground it directly to the body so that we have a more secure grounding point. The only wire we have left here is a yellow wire and that's actually for our left turn.

This wire will actually have to route across over to the drivers side and connect over there. So I'm going to go ahead and first cut back some of the jacketing here on the wires so we have a little bit more working room. So with the wire in our diodes what we're going to need to do is actually take the factory wires here and cut them in half and then wire our diodes in line. Ok, we're going to start with the right turn and actually this is the right brake wire as well, the green wire. And you can see we've got two inlets on side and one output on the other. So how we're going to install it we'll have the one end of the wire going towards the tail light going into this end here. This end will obviously go in the other side and then the other connector we'll actually go ahead and add our vehicle wiring to it. Ok, we're going to do the same things for the running light wire. There is a little bit of a difference here though because since we want both of the running lights to illuminate when we turn our running lights on we will a jumper wire from this diode over to the drivers side where we'll actually place another diode in line as well. So what I've done is taken the extra piece of brown wire here and peeled it away from the others, and I'm going to use it as my jumper to go across to the drivers side. And then with the wiring harness lead and the jumper wire together we can go ahead and put our second diode in line. Ok, and while we're still over here on the passengers side we're going to go ahead and take the white wire and ground it to the body. There is a provided ring terminal that comes with the kit. And what we're going to do next is take the diodes on the back side and while we've got some adhesive tape I'm just going to go ahead and secure them to the inside of the vehicle here. Ok, if you would like you can go ahead and take some zip ties and go ahead and tie those together. But from there we got the brown wire and the yellow wire left over to route over to the drivers side, then we'll go ahead and install those diodes next. Over here on the drivers side, again, we've got the same wires coming out of the tail light. Yellow wire is going to coincide with the yellow wire that we brought across from our harness and again the brown will go to the brown. So we'll go ahead and cut these wires and install the diode just like we did on the passengers side. Ok and we just go ahead and adhere those diodes to the body just like we did on the passengers side. From there, our installation is completed. We want to go ahead and secure off the wire again with some of the provided zip ties. We'll go to the front real quick and give it a test. And also, its a good idea to go ahead and put some silicon around the opening where we had drilled the hole and put the grommet earlier. Just to ensure that we don't get any fumes inside the vehicle. And with that, that will conclude the installation of the Roadmaster Diode Wiring Kit product number RM-154.

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