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Roadmaster 4-Diode Universal Wiring Kit Installation - 2018 Kia Soul

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How to Install the Roadmaster 4-Diode Universal Wiring Kit on a 2018 Kia Soul


Speaker 1: Today on our 2018 Kia Soul, we're going to be installing Roadmaster's four diode universal wiring kit, and 7-wire to 6-wire straight cord, part number RM-152-98146-7. This bulb and socket kit is going to allow us to transfer those lighting signals from our RV, back to our vehicle without tapping into the vehicle's wiring in any way whatsoever. We activate the left turn signal in our RV, it operates on both the RV and our vehicle. And here we have our brake lights, our running lights, left turn, and right turn.We'll begin our installation at the rear of the vehicle by removing both our driver and passenger side taillights.You'll find four Phillips head screws located down the inside edge of your tail lamp. Just go ahead and remove those screws. A plastic trim panel remover tool will make it easier when we're moving your taillight, when you're pulling rearward.

Just wedge it in behind the taillight and gently pry it outward. Now that we have access to our connector, we'll go ahead and disconnect it by pushing in on the small tab and pulling outward.We can now set our taillight aside, and we'll repeat the same process on the opposing side. Now we're going to take a piece of airline hose and use it as fish wire to go from our driver side tail lamp down to our bumper underneath. If you don't have any airline, you can use anything that's rigid but still has some flexibility to it. We'll feed it down.

And if you reach up underneath your bumper here, kind of towards the inside, then pull your wire out the other side, and we can use this to feed our wiring up towards our taillight assembly.We're now going to separate our wiring, as the yellow will need to run to the driver side, and the green needs to go to the passenger side. We're going to go ahead and snip the green wire. And we are going to also snip our white wire, as this is going to have to go to a ground at some point. So rather than running it up to the taillight, we'll just leave it down below to hook up.Once you've made a small cut, and you can just pull them apart. You want to make sure that you've got enough to run from one side to the other, so we'll just kind of eyeball it up.

Pull it down and over to our other side. We get a little bit more. Now we know we can make it. We'll start by running our yellow and brown wire. Now you are going to want to run an additional wire because the brown will need to go to both sides to keep everything color coded, we've got some additional brown wire here.

If you need some additional brown wire, you can pick some up here at here etrailer.com.So we'll take these and connect it to our fish wire. We're just using some electrical tape to connect it. Just wrap it around the wire, and the fish wire to make it pull easier. It's best to tape up completely the end. That's going to be the leading end when you're pulling it. This will help prevent it from getting caught up. I will just pull our fish wire and here we have our wiring up on our driver side. So you can go ahead and cut this off from your fish wire and let the wire hang down.On the passenger side, we're not going to be run the wire up just yet, but it's a good idea to have that fish wire in place, so when you're ready to you can. We're now prepared to hook up our diode on our driver side. So we'll strip back some of the sheathing here on the wiring. Just be careful, sliced down it. Go ahead and peel back that sheathing. You can go ahead and cut it off. You now have access to the wires that we need to splice into. We'll need our green wire and the green wire with the black stripe. The green wire's going to be our brake and turn wire, and the green with the black stripe is going to be our tail light wire.we'll now cut the green wire with the black stripe. Strip back both ends, and connect it to our diode. We'll start with the diode that has to blue and one yellow. We pulled off the blue and yellow. We're going to connect the blue to the vehicle side of the green wire with the black stripe. We'll then take the other blue one that was connected to the diode and connect it to the other end of the green with black stripe wire. So go ahead and split the yellow and the brown.We just need to peel enough back so we can make the appropriate connections, so we don't need to go too far. That'll be plenty fine. We'll strip back both ends of our brown wire. Go ahead and twist both of the brown wires together. And we're going to connect that to our yellow butt connector. The out will go towards the tail lamp assembly, so that's going to be our connector end. We'll plug that into our out.Then you'll have two in wires. One signal will come from the vehicle, the other will be from the wiring harness that we're installing now. We'll connect our brown wire. We're going to repeat this same process for the plain green wire, except our yellow connector will be blue, as there are no more yellow connectors, because there's no more dual wires. And we'll be connecting the yellow wire in the place where the brown went. You can then take the sticky pads off the back. You can either stick it to the side, or I like to just stick them together. This way you still have as much length as you did before when you started.We can now reinstall the tail lamp assembly on our driver side. Plug your assembly back in and your diodes can tuck nice and neat just right in alongside your connector there. We'll now take the brown wire that we had below and the green wire that we separated, and route those over to our passenger side. Once we've got them routed over, we'll connect those to the pull wire we dropped down earlier. And then we'll feed it up. We're back again, but now we're on our passenger side. Strip back some of the harness so we can access the wiring.This time we'll be making our connections to the green wire for our turn and brake signal, and the brown wire with the black stripe for our tail lamp signal. We'll go ahead and cut both of those wires. Strip back both ends. Now we'll take our two diodes, we'll be hooking a blue connector to each of the wires that we stripped back. We'll go ahead and pull those off and do that now.Now Strip back the two wires that we fed up, and connect a blue buck connector to those. We can now connect those to our diodes. Again, you'll take the connector side, which goes to our tail lamp assembly. That'll go to the out on the diode. And then the other end, so this is the brown wire with the black stripe will go to one of the in inputs and the brown wire that we ran up. We'll go to the other in input. Then we'll take our other diode, connect the out to the connector side, connect to the other end, to one of the in sides. And the green wire that we ran up, will go to the other end of the inside.We can now reinstall our tail lamp assembly. Then go ahead underneath and just buttoning up the back where you ran your wires across, using some of the zip ties to clean it up, and support that wire keeping it away from any moving or excessively hot objects. We'll now need to ground the white wire that we stripped back earlier. Go ahead and strip back some of that wire and connect the blue ring terminal provided in the kit.Now this can be connected to any ground stud. However, looking along the back here, there isn't one available. So we can just run them into the sheet metal here. Using a self tapping screw. A self tapping screw is not provided in the kit, but one can be picked up here at etrailer.com. Go ahead and slide your ring terminal on your self tapping screw. Find a suitable location. We're going to be putting ours here. Then you can tie up the excess.We went ahead and routed our wiring to the front now. I'm going to go ahead and trace the path we chose. We went underneath the bracket here, up over our evaporative equipment. Zip tying it and following any factory wiring whenever possible. Went down alongside the fuel tank. Up under this cover here. Now to get it under this cover, there are a couple of bolts we had to take out. There'll be three 10 millimeter nuts that you'll to remove and one 14 millimeter plastic nut. And we just took those off on this one side just so we could pull it down a little bit to poke that wire up above this under shield.Once we got it all the way to the front, we came out, and ran it up into the engine compartment. We used the fish wire trick once again to get that up into our engine compartment. Now we'll route this wire up to the front to our bumper, where we're going to have our 6-pole connector. Now we do have some components removed here in the front because the best time to install this diode kit is when you're putting on your base plate. If you're going to be flat towing, you're going to need those lights anyway, so kill two birds with one stone and do it now.You want to route it in a way where you are going to have access to it if you plan on installing a braking system on your vehicle, because you'll need to access these wires for your braking system. So I like to leave them kind of tucked off to the side where I know I'm going to be able to get to them later. So we'll route it down along this path. Here's where we have our fascia removed already, as we put our base plate on. We'll go ahead and poke it through and our 6-way connector is going to connect to our base plate here in the front. So we'll go ahead and get that wire route or right to it.And again we can follow that factory wiring, so this is some good places to zip tie it to. Got our wire routed up to our connector. We'll go ahead and leave ourselves just a little bit of excess, and then trim off anything that's remaining. Now go ahead and separate each of these wires, and strip back each one. And slide on your rubber protector. Then we'll connect it to our 6-way connector. We'll connect to our white wire, which is ground to the pin labeled GD.Poke in the wire and then screw it back down. Then we'll connect the tail lamp wire, which is the brown wire to the one labeled TM. Then connect the yellow wire, which is the left turn signal, the one labeled LT. And finally connect the green one, which is your right turn signal, the one labeled RT. Now it is a good idea to use some dielectric grease. Then fill this all up to prevent any corrosion and stick your end back on. we're not going to be putting our dielectric grease on just yet, because we still have to run our wires for our braking system.We can mount it to our base plate. Now it will have to come back off when you put your fascia back on. But we're going to go ahead and mount it for testing purposes. Our base plate here has a vocation already set for mounting. And the base plate comes with self tapping screws to mount it up. Use an eight millimeter socket to run those down. You don't want to run it real tight, just snug so that way it holds it back place.You'll plug your 7-way end into your RV or tester box, and you'll pull your 6-way in into your vehicle. Operate your lights and all of its positions to make sure they're working properly. Here we have our taillights, our left turn, our right turn, and our brake lights. And now with everything working properly, go back over your work and button it up, using the zip ties provided in the kit to make it all clean. In order to complete our flat tow setup, we used Roadmaster's easy five baseplate Roadmaster's Falcon all terrain nonbinding tow bars, Roadmaster's universal diode wiring kit, SMI Stay and Play duo supplemental braking system. And lastlY, we used Roadmaster's safety cables.And that completes our installation of Roadmaster's four diode universal wiring kit and 7-wire to 6-wire straight cord on our 2018 Kia Soul.


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