Trailer Wiring Harness Installation - 2014 Volkswagen Jetta Sportwagen

content loading

Customers compare 119179KIT to these similar products




Products Featured in this Video



How to Install a Trailer Wiring Harness on a 2014 Volkswagen Jetta Sportwagen


Today on a 2014 Volkswagen Jetta Sportwagen, were going to install part number 119179kit from Tow Ready. First thing we need to do is get access to the wire harness were going to work with. This will behind the panels right behind the tail lights. To start off we need to remove some interior components. Were already removed the spare tire cover and a spare tire itself. At this point we go ahead and remove the thresh hold.

There are two fasteners that are horizontal on the inside edge of the thresh hold. Take a flat screwdriver to unscrew them. Well go ahead and pull it towards the center of the vehicle just gently and then pull at the same time then the whole thresh hold will actually pop loose. Once we have that accomplished we need to remove the lid that coves the spare tire area as well. There will be four screws that we can remove. There are two additional fasteners on the other side of the cover; well have to remove these as well.

Once we have that out of the way we can go ahead and work on the perimeter that goes around it. This is a frame that the lid sits on top of. This frame is in two pieces and has a covering on top of it as well. The other coverings loose so we can find the fastener that holds it in place. There are two fasteners for each side. Theres a screw that goes horizontal towards the back seats.

Theres a plastic nut that holds the other half thats closer to the spare tire well. Well go ahead and remove the fasteners then we can go ahead and take them out. We can lift up on it and then pull towards the front to release it from the pin thats in back. This frame work has a left and right hand side. Once both sides are removed we can go ahead and work on the side panels to get access to our wiring. Well start by removing the tie down fastener at the top of a side panel.

Starting from the bottom, well feel around for fasteners and look underneath the edge you can see them and well just pry them loose with a trim panel tool. Where panel meets the roof panel we need to separate there as well. Then we can get our panel pulled free and we can do our work. Well have to do this on both sides of the car. Once our panels are free we can go ahead and start working on our modules. First off well go ahead and work on the drivers side. Now well disconnect the wire harness from the tail light. Theres a very small tab on each half of the connector where you push in and then pull the whole connector back it comes loose. Where our wire harness plugs into the back of the tail light is where were going to make our connections. We need to test which wire does what function. First off well go ahead and use the ground screw that comes with the kit and run it through the sheet metal behind the tail light. Well use that for our ground for our tester. Then well test the pins on the connector. Well start off looking for our running lights. When we test it we found out that gray with a black stripe is the running lights. Using the provided quick splice connector well go ahead and connect that wire to our brown wire. Next well go ahead and look for our left turn signal. In testing we found out its dark gray, white stripe. Connect the left turn wire to the yellow wire. Now we need to look for our brakes. With the brake petal pressed down well look for that circuit. That one looks like dark gray with a red stripe so well connect that wire to a red wire from our module. Now there are two wires for our module that are red, we want the smaller of the two. Now well also take the white wire with the ring terminal and we need to ground that to the body so well attach that to the inside sheet metal of the vehicle. Now we need to get a signal for our right hand side so well take a green wire and run it over to the right hand side. Once again well go ahead and test our wires. On this side theres a inaudible 00:04:19 ground that we can use for our tester. We found out that the dark gray with the green strip is a right turn signal. Then well go ahead and make our final connection with the quick splice connector. For our green wire well go ahead and use some loom clamps to help hold them in place. This will keep them hidden underneath the thresh hold. The part number well be using will be a0250. The screws were using are part number sa1131822. Now well go ahead and work with our big red wire from the module. Thats going to connect up to our black wire and supply the kit. This will need to be ran up to the battery so well take the yellow butt connector, connect it to the black wire and then connect our red wire to it. Well also take our module and well connect it to the sheet metal right next to where we installed our ground. Well go ahead and leave that alone for now. With our black wire connected we need to run it to the outside so in this case theres not an available grommet thats close by, well go ahead and drill a hole through the sheet metal in front of the spare tire area. Were drilling a small pilot hole first, then well follow up with a larger hole that will match the rubber bushing that were using. Once we have it installed well go ahead and take our wire and run it through. I wont take up all our slack, well go ahead and leave some on the inside route it on the inside so we can hide it underneath the carpeting and panels later on. Well use some sealant around the grommet on the inside. When everything secure on the inside of the car well go ahead and run a wire underneath the car up to the front towards the battery. This case were going to go over the exhaust heat shield then well go and follow the brake line, follow that up all the way up to the engine compartment. Then well go ahead and run our wire from the bottom towards the top. Now to do this we can use a stiff piece of wire or in this case were using a piece of air line tubing that we can work our way up from the bottom towards the top. When we pull our wire up we want to make sure we stay away from anything that moves like suspension or steering components, come up by the fire wall and then well work our way around the battery compartment. Well go ahead and cut out wire to length then well add our fuse holder. Well cut the fuse holder in half, one end will get a ring terminal and the other end will get a butt connector that will connect to the black wire. Once our wire is connected well go ahead and connect to the positive terminal on the battery. Now a lot of times the threads dont allow you to inaudible 00:07:02 that all the off. In this case were actually going to split a ring terminal a little bit, run it around the stud and then tighten the nut back down. Then put our lid back on to the case. We can go ahead and zip tie our wires as needed to make sure theyre secure in the engine compartment then we can go ahead and install a fuse into the fuse holder. As we reinstall our interior components well take our four pull wire and route it through the back side of the compartment on the drivers side. Following that we can go ahead and reinstall our interior components in reverse order of what we did before taking them out. Now we can go ahead and show how it works. All we need to do is pull out our wire harness and shut the hatch on it. We want to make sure that we stay away from the center so the latch won't damage the wire and also the seal around the door is thick enough where it wont hurt anything if you shut the door on it. At this point its a good idea to go ahead and check the wire harness. Well take a ground lead for our tester and connect it to the white wire. Then well test our brown wire for our running lights work. Well go ahead and test our yellow wire for our left turn circuit and our green wire will be a right turn signal. Now our brake signal should be a signal from the green and yellow wire. With that that will finish it for part number 119179kit on this 2014 Volkswagen Jetta Sportwagen. .


Questions and Comments about this Video

Info for this part was:

Test Fit:
Joe V
Test Fit:
Nicholas E
Test Fit:
Shane T
Test Fit:
Randy B
Test Fit:
Andrew S
Test Fit:
Shane H
Video Edited:
Zack K
Video Edited:
Joshua S
Video Edited:
Jacob T
Video Edited:
Andrew L
Video Edited:
Kathleen M
Video Edited:
Sue W
Video Edited:
Chris R
Video by:
Andrew K
Video by:
Dustin K
Video by:
Alan C
Video by:
Zach D
Video by:
Jonathan Y
Installed by:
Cole B

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.