Trailer Wiring Harness Installation - 2011 Ford E-350 Van

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How to Install a Trailer Wiring Harness on a 2011 Ford E-350 Van

Today, on this 2011 Ford E350, were going to install part number 118551 from Tow Ready. The first thing were going to do is to go ahead and remove the two tail lights on each side. To remove the wire harness, push down on tabs on the connectors. Well pull both of them off so we can remove the tail light. Then, well go and repeat the same process over on the passenger side. Now, well take the green wire with T-connector and were going to route it through the driver side tail light into the opening on the inside, then run it all the way across underneath the carpet and then run it back through the tail light on the passenger side.

Now, we can go ahead and remove the threshold to get it out of the way. With the threshold removed, now I can proceed to route our T-connector with the green wire over to the passenger side. The next thing well do, well go ahead and run our four-pole wire underneath the plastic like we did with the green wire. Were going to leave it inside just for now. Now, were going to go ahead and take our black wire that comes with the kit and connect that to the black wire thats on the module and well run that through underneath the plastic as well.

Eventually, these two sets of wires will be run through the ground just behind the plastic and out to the bottom of the vehicle. Next, well go ahead and mount up the module box. Well clean out part of the sheet metal on the inside and well go ahead and adhere it to the sheet metal. Well also take the white wire at the ring terminal and ground it to the sheet metal. At this point, we can go ahead and take our wire connectors and connect them to the factory harness.

I'm going to take our wire harness and hook it up to the factory connectors and then we can go ahead and reinstall the tail lights. Now, well go ahead and remove the grommet thats just behind the plastic. Through there, well route the four-pole wire harness and the black wire, and then well make a cut into the grommet and then reinstall the wires. Now, for the four-pole wire, we may have to remove the four-pole end to make things easier to go through because the hole may not be big enough for the four-pole. With the grommet reinstalled, we can go ahead and reconnect our four-pole to the rest of the wire harness.

With the wires ran through, well go ahead and reinstall the interior components, like the carpeting and the trim. Then, well go ahead and run our black wire up to the battery. Now, when we route the wire up to the battery, were going to make sure we stay away from anything thats moving, like the suspension components or anything hot like the exhaust. It looks like were going to add an extension to our black wire. So, well use identical type of wire, 10-gauge material, and go ahead and extend our wire up to the battery. Then, well go ahead and run it straight up through the engine compartment up to the battery. Now, were under the hood of the vehicle and now well go ahead and pull our black wire up to the battery and cut it to length. Once we run our wire up to the battery, well go ahead and attach our fuse holder. Well cut the fuse holder in half then well attach the ring terminal on one side and then the butt connector to the other side. Well attach it to our wire and then well go ahead and attach it to the positive side of the battery. Were going to make sure the fuse holder is secure next to the battery. After that, we can go ahead and install the fuse in the fuse holder and were good to go. With that, thatll finish it for our install of part number 118551 from Tow Ready.

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