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Trailer Wiring Harness Installation - 2006 Ford Van

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How to Install a Trailer Wiring Harness on a 2006 Ford Van


Today on our 2006 Ford van we're going to install part number 18252. This is a four pull hard wiring kit with circuit tester. First thing that you do is get our van ready. We need to take off the two tail lights. Starting on the drivers side here, we'll go ahead and remove the bolts. We're using a T 15 torque to take these out. The screws loosened, we'll go ahead and take out the remaining two. We'll just go ahead and leave our drivers side alone fore now.

Let's go to the passengers side and take off that tail light as well. Now we'll go inside the van and find a grommet to run a wire from the inside to the outside. We're looking on our drivers side on the interior. We'll pull up our carpet, and typically there's a grommet right here. We'll go ahead and pull that up and out of the way for now. We have access to outside. We'll go ahead and start fishing the wires to the inside.

Also, while we're inside here, we're going to go ahead and loosen up the threshold as well. We'll have to run one wire through the passengers side. There's a series of plastic screws that we have to remove. It takes a light touch, maybe the weight of a screw drivers enough, and then twist it. Typically the centers will come up easily. Sometimes you'll take a screw driver and pry underneath the head of this to give it some tension. All right, we'll gently go ahead and pull up our threshold.

Eventually, we'll go ahead and take our wire and we'll go ahead and run it underneath the carpet and protect it. All right, we've got our van ready now, let's go ahead and install our wiring. First we'll go ahead and wrap our four pull wire harness on the bottom up through our opening in the floor. We're going to peel back our green wire, because that's what going to go over to the passengers side. We'll peel it back about half way. If we need more we'll peel more out later. Now we're going to take our remaining three wires and we're going to route it underneath our plastic here and around to one of the holes behind the tail lights. We'll pull out our slack.

We're almost ready to make our connections with our wires. To test our wires we're going to need a ground and also, our white wire will need to be grounded as well. We'll go ahead and use a self tapping screw - it doesn't come with this kit - we'll attach it to the sheet metal, also with the ring terminal on our white wire. Let's go ahead and add a ring terminal to our white wire. We're using a self tapping screw that uses 1/4" hex head bit. We'll go ahead and pre-drill our hole out and then install our ground wire. Here, let's go ahead and take a ground for our tester that comes with the kit, attached to our screw. Then we're going to disconnect this wire harness going to this bulb right here, because this is going to contain the circuits that we need. This one right here goes to a reverse light; we don't need that. Take our connector apart, we'll push down on the tab right here, and pull it apart. Sometimes it helps to rock it back and forth. We'll go ahead and test the connection points inside the plug and look for running light circuit. It looks like it's all brown wire. Our running light circuit from our four pull that we're adding is going to be brown. In this case we'll be going brown to brown. To make our connection we'll be using a quick splice connector to slide our connector over the wire we're going to tap into, and then next to it, the wire we're going to add. Squeeze down a pair of pliers and we'll make a connection between the two, and we're good to go. The last wire on this side will be our yellow wire, and we'll look for a left turn signal. Looks like our left turn signal will be green with an orange stripe. We'll connect our yellow wire to that. We'll go ahead and plug our wire harness back into the tail light. At this point we can go ahead and put our tail light back into place. Lets go ahead and pull out our wire harness, whatever excess we have, and we'll go ahead and route it towards the center of our hitch. We'll go ahead and just zip tie it to keep it safe and secure, then we'll move onto the rest. We'll go ahead and pull up our slack and then we'll go ahead and add our grommet. All we're going to do is just put a simple slice through the grommet, right through here, put a wire inside, and then put it back into place. Now our three wires are still bonded together, we'll just hide it behind here. Of course the green wire's not going to be long enough, so we'll go ahead and add an extension of a green wire to go to our passenger's side. This can be any type of wire, typically all it needs to be is about 14 or 12 gauge wire. To go ahead and add our extension, we'll go ahead and use a buck connector. Let's just go ahead and tuck this underneath the carpet, and we'll go and route it to the other side. Passenger side will be a little bit easier to get to, we've just got to remove the cover for our jack storage, keep it underneath the carpet, and we'll just go route it up behind the plastic edge here and then out the opening. Let's go ahead and remove our connector from the tail light. We'll take our tester . This time we'll ground it to the bumper, since it's all metal, and we'll look for a right turn signal. Looks like our orange wire with a blue stripe is our turn signal. Once again, we use a quick splice connector to make our connections. Plug our tail light back into the wire harness, make sure it clicks into place, then we can go ahead and reinstall our light. Lets go ahead and put back all our interior components. Lets go ahead and check our work. We're using a little bit different tester just to make things a little more clearer to see. Running light circuit, left turn, right turn, and we'll get a solid signal on our green and yellow wires for our brakes. If you have everything working, that will finish it for our install. Part number 18252 on our 2006 Ford Van. .


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Employee Joe V
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Joe V
Employee Nicholas E
Test Fit:
Nicholas E
Employee Rick A
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Rick A
Employee Shane T
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Shane T
Employee Jared G
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Jared G
Employee Robert C
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Robert C
Employee Zack K
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Zack K
Employee Andrew K
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Andrew K
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Joshua S
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Jacob T
Employee Mike H
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Mike H
Employee Sue W
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Sue W
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Chad S
Employee Chris R
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Employee Jeff D
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