Trailer Wiring Harness Installation - 2012 Volkswagen Jetta SportWagen

Installation of a Trailer Wiring Harness on a 2012 Volkswagen Jetta SportWagen

Today on our 2012 Volkswagen Jetta SportWagen well be installing wiring kit part number 119176kit. To begin our install, weve already removed our spare tire to gain access to our spare tire well. Well need to remove the threshold. To do this, youll see two plastic tabs that will use a flathead screwdriver to undo. With our plastic tabs undone, we can then using our pry tool reach underneath the threshold to the clips holding it in and pry it up and well set it aside for reinstallation later. With the threshold out, well remove the cover at the driver side rear and undo the inner cover to expose our taillight wiring.

On the passenger side, well need to simply remove the cover here which will expose our passenger side wiring. Now well use our test light included with our wiring kit to find our right turn signal. Youll need to find a good ground for your test light and with your right turn signal on you can back probe the connector. Now that weve located our right turn signal wire which is black with a green tracer, we can move over to the driver side to pinpoint our left turn signal, running light and brake signal. Well locate our left turn which is the black with white tracer, well locate our running light which is gray with black tracer and well locate our brake signal which is our black with red tracer.Were now ready to run our wires for our module light.

Were going to go ahead and use our plastic air tube to help us route the wires through the molding and up to our taillight connector. Before we move the module box into the panel, we do need to connect our power lead. To do this, well simply cut a small slit here on the passenger side grommet and feed our wire up through from underneath the vehicle. Now well need to pull enough of the wire up so that we can run the wire through and well go underneath the threshold and over to our module light. Now remember, our module box will run up here so well need to make sure we have enough wire for that.

Then all we need to do is strip the wire back, insert it into the yellow butt connector and crimp it down. Once weve made our connection, I like to go ahead and tape it up with some electrical tape. Now that weve made our connection, we can go ahead and pull the entire box up into the panel. Now that weve brought our module light up to the driver side taillight compartment, weve also brought the 4-pole up as this compartment will make a nice housing for storing it. We can leave that aside for now.

Well take our leads from our module light. Our red wire here is the stop signal. The yellow wire is our left turn and the brown wire is our running lights. The white wire will be our ground. Now well unplug the taillight assembly to give us a little room to work with the wires. Well take our quick connectors that are supplied with the wiring harness kit. Well slide it over the black wire with the red tracer and well take our red wire making sure to go into this direction to keep from interfering with the connector when it needs to plug in. Then using a pair of pliers, we can clamp the quick connect down over the wires making our connection. Well then close our quick connect cover and well repeat this process for each of the remaining wires on our module light. And will all our connections made, we can plug the taillight assembly back in completing our connection to the driver side. Now were ready to make our ground. Supplied with the module light kit is a self-tapping screw and find a suitable location for our ground. Now with our wiring completed on the driver side, well go ahead and tuck the module light box in behind the carpeting here, make sure that our wiring is tucked out of the way, we can attach it using a zip tie to the carpet inside here. We can clip off the excess zip tie then we can close the access panel to leave our 4-pole connector exposed here in the compartment. Were now ready to make our attachment for our right turn signal using the long green wire in your module light kit. Well attach it to our air line and use the air line to guide us through the paneling and up to our taillight connection. Were now ready to make our connection. Again, using our quick lock, well slide it over and then bring our green wire in and again clamp it down. We can then put the excess wire back down in behind the carpet and reinstall our cover. Were now ready to reinstall our threshold. Well need to make sure our wire is out of the way while we install the threshold. I use a blue hold down and a self-tapping screw to hold our battery in place. This will help to keep the wire away from the spare tire while it is in the compartment.Now were back underneath the vehicle where well run our battery light up underneath the vehicle. We do need to make sure to stay away from any moving components like the suspension or hotspots like the exhaust. Now that weve got our power wire ran through the vehicle, were ready to attach our fuse holder. We need to strip back the wire, we can then attach our butt connector and then take our fuse holder and cut the wire in half; well strip back the wire and attach it to the other side of our butt connector. Now when we route our wire, we want to make sure we go around the air box to stay out of the way when it needs maintaining. On the other side of our fuse holder, well strip the wire in and install in our islet terminal. We can then attach it to the battery. And now that our connections made, we can go ahead and install our fuse which will complete our installation.And there you have it for part number 119176kit on our 2012 Volkswagen Jetta Sportwagen.