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Roadmaster Tow Bar Wiring Kit Installation - 2014 Ford Fiesta

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How to Install the Roadmaster Tow Bar Wiring Kit on a 2014 Ford Fiesta


Today on our 2014 Ford Fiesta we're going to take a look at and show you how to install the Roadmaster Universal High Powered Diode Kit for Towed Vehicles, part number RM-154. Now we're going to begin our installation with the fascia off of our vehicle. We're doing this as part of the actual baseplate installation. This is when it makes the most sense, when you've got the front end off the car when you can get your wires routed really nicely. What we're going to do is we're going to take that long roll. It's going to have a 4-pole plug at each end. Take off just what we need here.

That should be more than enough, maybe six foot or so. Now I'm going to lay the rest right up here on top of the battery on our vehicle. Now the braking system that we're using today is going to require a couple of connections here with our ground wire, our yellow wire, and our green wire, so I'm going to be looping mine up around where I can make that connection and then back down. If your braking system doesn't require that, you can just run this straight underneath the vehicle. You won't have to worry about running it up like we're doing here. The gist of it's going to be just to run it down behind any other wires that make up our electrical system here on the front side of the car.

I want to tuck this back in behind any of the panels that I can, help give it some security. Ultimately we're going to want that 4-pole to come out right up here in the middle of the baseplate. Now what we're going to do to get our wiring down here to the bottom side is I'm going to use a . it's kind of flexible . this is a piece of air line tubing for like air bags. You can use a coat hanger or something like that.

You can see our brake lines are going to run right here, also our fuel line and stuff. We're going to go right along these hangers to run our wire to the back, make it look nice. Just up behind this heat shield, and I with run my wire behind that heat shield. We've got our exhaust here so we're going to use that heat shield as a protection. There's another kind of a hanger right up in there so I'm going to make that air line just go through the top side of that and push it up there so hopefully we can get a hold of it from under the hood. Now you can see our air line right back there.

I want to bring it up. I've got my wiring zip-tied off right there so I'm going to go right down below that, try to find the most direct route. Would be right through there. Bring this up. Now the end of my pigtail here, it's got our connector on it. We're not going to need that at the back of the car so let's just split that off there. If you need one, cut a little bit of extra and you can put it on something. We'll just wrap that around our air line tubing and use some black electrical tape. We'll pull it on through. Now we'll just start bringing it down to us. See, I'm going to use that like a shelf. I'll just set it right on top of it there. Then we'll use some zip ties to secure it. Those are provided in our kit. If you're choosing a different route, you want to avoid hot areas or pinch points, anything that might cause damage to our wire here. Of course we want to trim off any zip ties we got hanging down. Now I'm going to go right up behind the heat shield. Just going to try to tuck right over top of the gas tank there. Now from there we're going to tuck right up into the frame rail. We'll just feed it in the one side as we pull it out back here. Let's just get it unwrapped down here. We'll start splitting our wires. There's just a plastic sheeting that goes around those, so they're pretty easy to split. If you can't split them with your fingers, then just barely go in between them with a razor knife. Then we can get them individually separated. Now inside of our trunk here on each side we're going to pull out the push pin fasteners that are holding our carpet in. Then we'll just push that down out of the way. We then release that large thumb screw there holding in our light. Then we can separate this plug here right here on the back. Push in on that tab on the bottom there and pull it apart. Now let's set this aside some place safe so we can get to it in a minute. What we'll do now is pull back the wrap that they've got around these wires. Now what we need to do is test these wires to see which of the wires controls which signal. What we're concerned with are going to be our running lights, our brake, and our blinker. Once we figure out what they are, we can just write those down. With our light plugged back in, let's have him turn on the running lights. Let's test each of our wires. Go ahead and turn them off, and back on. It looks like the purple with the green is going to be for our running light. Next let's test our blinker, and blinker off, and back on. The gray and orange is going to be blinker for us. Now this one runs a combined turn signal and stop light, which is good. The gray with the orange, not only is that going to be our blinker, but also our brake light. Now let's check our other side. Now turn them off and back on. Perfect. The orange and white, that's going to be for our running lights here on the passenger side. The green and orange takes care of the blinker. Hit the brakes, and also our brake light. Now we'll stick one of our either stiff wire, or again, in our case, air line tubing. Do it down through each of those housings. Now what I'm going to do where we come out of our frame rail on the underside here, use a little piece of our wire loom, just tuck it up in there, keep our wiring safe, especially coming around that edge. We don't want it to wear over time and cause us any issues. Get it up like that. Then we'll just put a little wrap of tape around it. Now for our passenger side here we're going to attach the green and brown wire to our red pull cable. Pull it up there towards our taillight opening. What we're going to do here on the passenger side, the green and orange and the white and orange, we want to split those, strip the end back. We're going to add one of our blue spade connectors onto the end of each one of those. Now we're going to take a pretty good length of our brown wire, and what I'm going to do is double it over. We'll split that, bringing up about the same amount of green wire. Cut that. Now we're going to strip back all three ends. The two browns one we want to twist together. They're going to get the only yellow spade connector in the kit. To the end of the green one we'll add one of our blue. Now these will pass to the inside of the car. Pull our plug on in there and we'll get our diodes set. What we're going to do is use this nice flat surface up here and mount our diodes to it. Clean it off with a little bit of alcohol and we can let that evaporate. We'll start making our connections. We'll take that double brown wire. That's going to be for the running lights. We're going to plug it in one side of our diode on the inside. Our orange and white coming from the front of the car is also going to go in the same one. That's our running light circuit. Then the orange and white from the plug side will go into the out. Basically we're running two wires in. They're going to translate it into one wire coming out. Pull that double-stick tape off. Get it positioned there so everybody's happy. Now we'll get our other one set. We'll bring our green wire that we ran back to the other side. Then the outside is going to go to the plug just like that. Now the brown wire that we added on, or the one that we split and then we had two, we're going to run that back down and outside the car there. We can put our passenger side light into place. We'll just plug our wiring back in there and reinstall our thumb nut there. Then you also want to tuck . we pulled that weather stripping out and you'll tuck that carpeting in back behind it. We're going to trim off our light wire, strip it back, and we're going to add a ring terminal to it. Now we're going to use a self-tapping screw here. We're going to go right into this double-thick piece of steel. It will be nice and secure. Now we're going to use one of the provided butt connectors. We're going to connect that excess green wire we had to our brown wire. Now this is going to be out underneath our vehicle for the most part, so let's take some tape and really wrap it up good to give ourselves a moisture or vapor barrier. Then we can run these up over that rear bumper structure. Now there's a spot right in the frame there we'll use to anchor off. Not going to do it too tight, just enough to keep everything in its place. We'll bring it around to where it's on that flat side so we won't have to worry about cutting it. Let's just continue on across. Now we'll bring it over the bumper again. We connect it to our pull cable and take it up where we need it to go. Now over here on the driver side we're going to do the gray and orange and the purple with blue. We're also going to cut our green and yellow and strip those back. Those will also be getting a blue spade connector. Now we should be ready to make our diode connections. With our running lights we're going to be connecting in our green wire. Remember that started as a brown wire. We just added a little bit of extra to it. Then the purple and green, that's going to get the yellow wire. We'll slide our light housing back in. Push in our connector and tuck it away. Now we're going to connect to our tester here. You could also use the vehicle you plan on towing with. The first thing what we want to do is turn on the taillights. We should have a good signal coming out of both of them. Nice. Now let's check the left blinker and left brake. Now we'll check the right blinker and the right brake. With all of our lights working as they should, that's going to complete today's installation of the Roadmaster Universal High Powered Diode Kit, part number RM-154, on our 2014 Ford Fiesta.


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