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Roadmaster Diode 7 to 6 Wire Coil Kit Installation - 2008 Saturn Vue

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How to Install the Roadmaster Diode 7 to 6 Wire Coil Kit on a 2008 Saturn Vue


Today on our 2008 Saturn Vue we're going to be showing you how to install the Roadmaster Diode Towed Vehicle Wiring Kit with the seven wire to six wire flexo coil. Part number is RM-15267. Now, for the towed vehicle wiring kit our installation of our four pole wire, it's going to start well before you get the fascia put back on the car. We do this during the base plate process, and it's going to allow us to route our wire in behind that fascia where we wouldn't normally be able to reach so we can get it nice and secure, make sure we don't have any loose edges or anything like that, or any wires hanging any places we don't want. Get that to come down through. Basically, just going to go by the end of the battery here, and then we can route this across and down to our plug area here. Now, I've already attached the bracket just to give us an idea of where that's going to sit.

This is one of our long brackets, part number 18136, just a universal mounting bracket right around the base plate. Then that's for the actual plug, and that's going to come with your Roadmaster wiring kit, so you won't have to worry about purchasing that. All right, we routed our wire up here, we've got it exactly where we're going to need it later. We can go ahead now and finish up the rest of our fascia installation, and we'll get back to that when the time's right. All right, we've got our fascia back on the car. It's time to move on and get our wiring taken care of.

We'll bring out our excess, we're going to leave a little bit of slack here. We can always zip tie it off to our base plate there. If we ever need to make any changes or if any failures occur, we'll be able to address it. We're going to get those stripped back. Now, this is a separate wire.

This is for a charge line. This is what we're basically just going to run this up to the battery. That way as we're flat towing we'll have a trickle charge effect. Just separate those wires off. Now, as part of our kit we're going to have our six pole. It's got this rubber boot on the back.

We'll want to slide that boot over our wiring here. You'll see each of our connection points here on the back. With a small Philips screwdriver you want to just back those out. Each one of these are labeled, and also with the kit and your instructions they make it very clear on what does what. We can see, here's the top, so if we rotate that inaudible 00:02:44 way around, the center is going to be our auxiliary power. Then we'll come down from there, about 4:00 we've got right turn. You're going to have left turn, going to have ground, you're going to have trailer marker or running lights. This one's not going to be used in this application. That would be for a stop signal, which we don't need. Now, the running light we'll use the brown wire for, that's the trailer marker or your running light signal. It's labeled TM on the back of the plug. Next one from there is GD or ground. Next one we have, left turn signal, that's going to be the yellow wire. Then we only got one left, that'll be our green wire for our right turn and brake signal. Just going to be mounting that there. Pull your boot up. Now, once we've done the rest of our wiring here, once we've got everything settled and we know it works, I'm going to take some black silicone sealant, I'm going to put the tip right here in the back of this plug, and I'm going to fill this full of black silicone. That way we keep any water or any moisture out of here, because that can sometimes cause corrosion here, and then you'll get wrong signals going back to your vehicle. Now our kit's going to have a short piece of wire loom that's included with it. I like to use that here just to kind of go up and over our wiring, give it a nice look. Use one zip tie right up here at the top of it just to keep it closed. Still want it to be able to slide on that wiring. We can continue to push it all the way up, and we won't have five different color wires peeking out through our grill. We'll just have one nice black piece of wire loom there. On the bottom side here we can use a little bit of black tape just to finish off the end. You want to leave enough room, like I said, to get your silicone sealant in there. Then we can use the provided screws that came with the kit, we'll use these to secure our socket right here on the bracket. Now, we've looped our four pole wire up into the engine compartment, and then we need to go back down. The reason we're doing this is because of the breaking system this vehicle's getting. We need to tie into the left turn and the right turn. In order to do that, we've looped it up here to make an easy connection. Now I'm going to route it right back down. Then we'll follow the brake lines which come off right underneath this coolant tank reservoir. We're going to follow those brake lines on toward the rear of the vehicle. You can see we've come out on that bottom side of the ABS actuator there. We'll just start zip tying off to our brake lines, and head on towards the rear. Once we get to this area of the vehicle, this is where I like to separate my white wire from my other wires. Now really, we can do this anywhere up or down the bottom of the vehicle. You could do it right at the front if you wanted. Just seems to be a good location. What I'm going to do is separate my white wire from my yellow, green, and brown. We're going to save the excess that we cut off of here. That way we can use it if we need it later. Right into that piece of steel there so we can trim off our excess. Now we'll strip the end of that back. In our kit, got a ring terminal. Just going to place that on. We can use the provided self tapping screw to get it secured. You just want that to be secure enough so you can't wiggle that terminal around. Once we get back to this area we're going to separate now the green wire off. That needs to go over to the passenger side. Just like we did the white wire, we'll pull that green wire off there. With this one, we'll go right across this channel here with a piece of wire loom that runs . There's a wire loom that runs over there so it's got good connection points that we can attach to and get it where we want it. All right, we've got that here, we'll run that up when we need it. Let's go back and we'll continue running the driver side wires. Now as we head towards the rear of the vehicle with our wiring, we want to be sure that we avoid any significant sources of heat, any pinch points, any sharp edges, or anything else that might cause damage to our wiring. All right, now we're back up top. We're going to get our taillights removed. We've just got two screws here and here; use the Philips bit on those. Just kind of pull out a little bit and also rearward, it should slide off. You can see there's going to be a little keeper here, kind of holds that wiring. Pull it off, that'll allow us just to kind of rotate our light and we'll let it rest there. Do the same thing for our other side. All right, now we're going to use just a standard 12 volt test light to test out the wires that are running into, you can see this is going to be the upper bulb. That's the one that takes care of our running lights and also our brakes. We're going to use the brake signal wire to run our brakes and our blinkers coming from our motor home. We'll rest back down. We'll start by having someone in the vehicle turn on the headlights. Now, with those on we'll need to test our wires to determine which one has power. Off, and back on. We know here on the passenger side the blue wire is for our running lights. Will you try the brakes Off, back on, and off. The red wire's going to be for the brakes. Now we'll go check the driver side and make sure it's the same, or determine which color wires we have there. Looks like we got the same colors here, so we'll tap the red wire. Try the brakes, and off. Back on, and off. Now the running lights, and off. On, and off. All right, so it's going to be the same on both sides. The blue we're going to be tapping into for our running light circuit, the red we're going to tap into for both the brake and blinker. Now that we know what's what, just going to pull the lights out of the back of the housing so we can get this set aside somewhere safe. You just turn these 90 degrees and then pull straight out on them. Now, to get our wiring pulled up into position we're going to pass right through a narrow area that's between the body of the vehicle and our rear bumper cover here. We're using a piece of air line tubing. You can also go with, like a coat hanger or stiffer piece of wire. Just want to slide it, there's a small square right down here, you need to get it to go through there first, right through there. Then manipulate it as straight down as you can. Then once I get it down, I like to push through as much as it will let me. Then we'll go underneath and see if we can't find that. Once we've got that pulled through we're going to take our yellow and brown wire, and also that piece of white wire that we trimmed off earlier. Stick those together, we'll tape it right off to that, and then pull it up behind that taillight housing. Just want to pull our wires on up through. Now we'll trim our white wire off, also our yellow and brown here. We'll give ourselves plenty of slack. We're going to strip back the end of all three of those. Now, the end of our white and our brown wire here, we're going to twist those together. The white wire's going to act as our jumper wire to send our running light signal to both lights. Now, on our diodes there are spade connectors. We've got one yellow, the rest of them are going to be blue. We want to grab the yellow one, we'll crimp that onto our white and our brown wire. Make sure that's got a good hold. The yellow one here, we're just going to add a blue one. Now, on our factory wiring I want to separate this. It's going to give us as much slack that is available, which is a good thing when we're putting in diodes; we need some extra room. We'll trim that off, being careful not to cut any of the wiring underneath. You can see that's going to give us some extra slack, because my diodes are going to be mounted right up here. We're going to come, maybe about 3 inches from the end of the loom from the factory, we'll split that blue wire which is for our running lights and get that stripped back. The end of each one of these will get a blue spade connector. We'll do the same thing for our red wire there. All right, now we want to grab one of our diodes. We'll start with our running light. You'll see, the diode's going to have two inputs and it's going to have a single output. This allows us to bring an input in from our vehicle and an input in from our RV, and only send out one signal to the light to operate it. Now, the signal coming in from the RV cannot pass back into the signal from the vehicle, and vice versa, so we're not going to have any back feeding to deal with. This is going to help to isolate everything and keep everything separated so we don't have any issues. We'll take our running light signal, the factory will go on the in. The new one we just added will go on the in, and then the blue out is going to go to the out. We have two inputs, they're going to feed a single output out to our light. Just going to clean that area off. I'm also going to clean the surface of that diode, because I'm going to be adding another one to it. Pull that foam tape off, then we want to position that up right as high as we can get it right up into this corner. Then we'll push it and make sure it's stuck on there really well. Do the same thing for our red wire this time, using the yellow wire that we brought from the front of the vehicle. That's going to stack right on top there. Now we're just going to use a little more silicone here. Not too worried about it, in the area it's in it seems like it's going to be a good area, but can never be too sure. We'll do the same thing on the passenger side, only we'll use the green wire for the yellow wire, and the white wire for our brown wire. Now for our white wire, just going to route it right behind this rear bumper cover. We'll be able to zip tie it off there. We'll get our wires taped off to that pull wire and get them up and behind that housing. Now, the white wire that we jumpered over from the other side, that's our running light, so that's going to be connected to the diode with our blue wire. For our other diode, we'll be connecting the green wire from the front of the vehicle. The out is going to be the wire that goes to the bulb and the in is going to be the one that comes in from our vehicle. All right, we got it put back together, now let's test it out. To run our test, we'll simply just plug the six pole end of our flexo coil right into the front of the vehicle. Now we'll run through all of our functions and make sure they're working properly. Let's start with our taillights. Now we'll do the left brake signal. Do the left blinker signal. We'll do our right brake signal, and our right blinker signal. Another test that we'll run is to operate either of the turn signals, and then to have someone step on the brake in the vehicle. With the brake applied, you want to ensure that the signal from your motor home is still flashing your blinker, which ours is, indicating that we're not going to have to worry about any relays or anything like that on our brake pedal switch. That's going to complete our installation of the Roadmaster Towed Vehicle Wiring Harness with the seven wire to six wire flexo coil wiring kit. Part number is RM-15267 on our 2008 Saturn Vue.


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