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Roadmaster Universal Diode Wiring Kit Installation - 2017 Ford Focus

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How to Install the Roadmaster Universal Diode Wiring Kit on a 2017 Ford Focus


Speaker 1: Today on this 2017 Ford Focus we'll be having a look at and showing you how to install the RoadMaster Universal Hy-Power Diode Wiring Kit, part number RM-152. Here's what our diodes look like installed. Now, many of our customers have asked us which wiring is the best option available for them without causing harm to the vehicle, especially on a vehicle that has a separate turn signal bulb in the brake light and tail light. By using these diodes here, we don't have to worry about the vehicle having a separate turn signal than the brake light. This will turn our vehicle almost into a trailer where the tail light and brake light and turn signal can all be ran off of one bulb.These diode packs allow us to tap into our vehicle's factory lighting system without having to worry about causing any damage from electrical back feed from the motor home into this components on our vehicle. The diodes prevent the electricity from flowing towards any of the electrical components.

It only allows electricity to go to the light bulb, thus illuminating it and protecting your vehicle at the same time. What this allows us to do is use what our vehicle already has from the factory. You don't have to worry about adding an additional bulb to our vehicle a bulb and socket wiring kit or using magnetic tow lights.It's a simple process of just hooking up the umbilical between your motor home and the front of your Focus and there's nothing else you have to worry about. For this particular flat tow setup, we use a RoadMaster EZ5 Base Plate Kit, a RoadMaster Universal Hy-Power Diode Wiring Kit. We also used a RoadMaster Automatic Battery Disconnect.

Used a RoadMaster Stop Light Switch. We used a RoadMaster Sterling All Terrain Tow Bar. And for our braking system, we used an SMI Stay-IN-Play DUO. In some applications you may or may not need a high low adapter to ensure that your tow bar is within the specified range. We have several different options available on our website depending upon your needs.Now that we've gone over some features, we'll show you how to get it installed.

To begin our install, we have our wiring sticking out the front of our vehicle, wrapped inside in a provided wire loom and use some tape to seal it together. Now, we routed this wire behind the fascia while it was off when we did our base plate. Now we'll separate all four of our wires at the front. Now, we'll take our 6-way connector. This came with our tow bar.

We'll take off the dust cover on the back and we'll slide our wires through.Now, let's strip back a little insulation from all of our wires. We'll take our 6-way connector now and we'll loosen this terminal, this is GD, and that's for ground. With the set screw loose, we'll now take our white wire and we'll stick it inside that terminal and we'll tighten the screw down to secure the wire. Once we have it tight, we'll pull back and made sure it's secure. The terminal next to it is marked TM, and that's for your tail lights and marker lights. That will get our brown wire. We'll skip one terminal, go over to this one, it's marked RT. That's for our right turn signal and right brake light. And that'll get our green wire.That leaves us for our yellow wire and that's for our left turn signal and left brake light. That'll go to terminal marked LT. And this is what it looks like with all of our connections made. Now, here's a tech tip. I always take some dielectric grease, which we have available on our website. We flood the back of our connector. This'll help better protect it from the elements in case any moisture was to get inside. Then we can slide our dust cover down until it stops on this ridge. We'll now take some electrical tape and we'll tape the cover to our connector and we'll continue wrapping down until all of our colored wired are covered up.Now, our connector will attach to our base plate's prongs here and here using the screws that can with our base plate. Our wire comes up behind our fascia, comes up behind our headlight, comes up here. It's on top of our air box right now. We left a little slack in this area, so you can tuck it behind the air box after we make some connections to it at a later point in time. It goes down over our transmission, making sure we avoid any moving parts and sources of heat. Here's where our wire comes down after it leaves our transmission and engine bay. It goes over our subframe. We stuck it inside this channel here to help it away from the exhaust and protect from any road debris that may get kicked up.Runs back to the end of the channel and comes out. Brought it underneath our heat shield for our exhaust. Comes around. We have it zip tied to the heat shield here. Goes over our rear subframe, making sure we clear any of the moving suspension components and keep it as far away from the exhaust as possible. Comes out here and we have it zip tied right to the driver's side of our bumper beam area, where it's right behind the fascia. Now, we'll open our rear hatch. Now, behind our tail light assembly, we'll find a cover. Just kind of pull it towards us and set it aside. Now, behind that cover we'll find one of our wingnuts that holds our tail light assembly in place. There's another one up here in this opening.We'll unscrew these. Now we can grab our tail light assembly and we'll pull it away from the vehicle. As you can see with it pulled away now, we have several different bulbs here. One, two, three, and four. The only one that we need to concern ourselves with is this one right here. This one that has purple, yellow, and black wires going to it. This is the one we'll be making our connections with. Well go ahead and unplug all there right now though. To do that, you just twist it and you can pull it away. We need to unclip the wiring harness from the tail light assembly. In order to do that, there's a tab right here, kind of can push down on it and it'll pull away.Here's the tab here. Once you push down you can pull it away. Now we can set our tail light assembly aside where it won't get damaged. And now we have our head lights turned on and we're looking to see which wire's for our tail lights. It should be this purple wire, but we'll double check with a test light. You can pick up a test light on our website if you need one. And as you can see, that is the wire we need to make our connections with. Now, we'll cut that purple wire right in the middle and we'll strip back insulation to both ends. Now, take our blue spade connectors and we'll crimp these onto the purple wires that we just stripped back.Take one of our diode packs now. The output side will go to the end of the wire closest to our bulb. And the other purple wire will go to one of the input sides, doesn't matter which one. Now, we'll have an assistant step on our brake pedal and we'll determine which one of our wires is for our brake light. It should be this yellow wire, but we're going to verify with our test light. Alight, perfect. Our assistant will get off the brake pedal now and we can make our connections. We'll now cut the yellow wire in the middle and strip back insulation. Now, we'll crimp on blue connectors again.Output side of the diode pack will go towards the bulb. And the other end will go to one of the inputs. Here's what it looks like with all of our factory connections put back into place. Now we can make our connections with the tow package wiring. We've stuck down our pole wire behind our fascia and we used this to pull up our 4-pole wiring. We'll just tape the two together with some electrical tape. We'll now separate our four wires like we did in the front. Now that we have all the wires separated, our green wire here we can drop back down below. This will be go over to our passenger's side.Take our white wire, we can just measure off a few inches until we have enough to connect via ring terminal through our sheet metal. We'll save the excess because we may need it. Take off some insulation. We'll now take our ring terminal, stick it onto the white wire and we'll crimp it into place. And we'll attach this to our vehicle's sheet metal using our provided self-tapping screw. That'll give us a nice, solid ground connection. We have out about a foot of our yellow and brown wires sticking out from behind the tail light assembly and we'll cut off the excess. Strip back the insulation from both wires.Now, depending on how you have your wires routed, you may need to do the following. On our brown wire that we cut off, we're going to tie this together with the brown wire here and this'll provide our tail light signal to the passenger's side. In order to get over there, you may need to extend it, which is what we did. We used our leftover white wire from our ground wire to combine the two. And we used a heat shrink butt connector, which we have available on our website. We'll the end of our extended brown wire now from the white end. Strip back some insulation and we'll twist that together with the brown wire here.This way we'll have a wire that'll connect to the diode pack over here and then one that'll go to the passenger's side. For this wire, we'll use our yellow spade connector and we'll crimp it down. We'll plug that into the other input side on our diode pack that's on the purple wire. We'll place on a blue connector onto our yellow wire. Crimp it and we'll plug this into the other input on our diode pack that's on the yellow wire. Now we'll peel off the double sided tape from our diode packs and we'll stick them together.We went ahead and dropped down our extended brown wire, just like we did with the green wire. Now that all of the connections are made on our driver's side, we can reinstall our bulbs. Put the cover back on. Next, we went ahead and repeated the same process to remove our passenger's side tail light assembly. Now, we've turned on tail lights again to determine which wire is for our tail light signal. It should be the purple wire again, but we're still going to test with our test light. Okay, so it is the purple wire. We'll cut our purple wire now and we'll strip back the insulation from both ends.And then we'll crimp our blue connectors. Take one of our diode packs and plug it in, making the sure the output side goes towards our bulb. We have an assistant stepping on our brake pedal again and we're going to test which wire is for our brake light. It should be this yellow wire, but again we always want to double check before we make any electrical connections. Okay, we have verified it is our yellow wire. We'll now cut our yellow wire. I like to point out, I'm cutting our wires right where we used our tester on, that way we don't have to worry about there any punctures in our wire. Going to strip back some insulation.And we'll attach our blue connectors. Now that we have both of our connectors crimped onto our yellow wire, we'll now install our final diode pack, making sure that the output goes towards our light bulb. Here's our green and our extended brown wire. We routed this over towards our passenger's side, going over our bumper beam, making sure we kept it away from our exhaust. And then, we have it zip tied up to our body here on this hole. And we've already dropped down our pole wire and we taped the end of our wires to it so we can pull it up behind our tail light assembly.Now, just like we did on the other side, we'll cut off about a foot of our green and brown wire. That way we have enough slack to make our connections. Strip back the insulation on both wires and we'll crimp on our connectors. The green one will go to the diode with the yellow wire and the brown one will go to the diode pack with the purple wire. And this is what it looks like with our connections made. Now we'll stick our two diodes together. Now we can plug all of our bulbs back into our tail light assembly. Now that we have all of our bulbs back in place, we can reinstall our tail light assembly.And now we'll test out our wiring. We have our 7 to 6-pole wire here, which is available separately on our website, plugged into a tester. And we have it plugged into the front of the vehicle now and we'll test all of our functions and make sure it works properly. You can also just hook up to motor home and test it that way as well. We'll start by testing out our tail lights. As you can see, both of those are working properly. We'll do our left turn signal now. As you can see, that's working as well. Now we'll try our brake lights. As you'll notice, both of those are working great. And that leaves us with our right turn signal. Let's try that out now. And as you see, that's working as well.And that completes our look at and showing you how to install the RoadMaster Universal Hy-Power Diode Wiring Kit, part number RM-152 on this 2017 Ford Focus.


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