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Tekonsha Custom Fit Vehicle Wiring - Trailer Hitch Wiring - 118675 Review

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Review of Tekonsha Custom Fit Vehicle Wiring 118675


Today, we're going to be taking a look at part number 118675. This is the T1 Vehicle Wiring Harness with the four pole flat trailer connector. This product is going to fit certain years of the Volkswagen Tiguan. It's going to provide a four-way flat trailer connector at the back of your vehicle to power your trailer signal lights. This is compatible with five pole, six pole, and seven pole adapters. Your adapters are sold separately. It's going to be constructed out of 16 gauge bonded wire.

And it's going to come with a dust cap for the four-way flat connector. That way, you can always protect those connection points when the connector's not being used. It's going to include your modulite. This is going to connect directly to the vehicle battery to avoid overloading the vehicle's electrical system. Now, a benefit of this system is it's going to connect quickly and easily. What you'll have to do is locate the connection points behind the vehicle's tail lights.

Then you're going to have two sets of connectors to plug in. One set's going to have a yellow wire with it. That's going to go to the driver's side of the vehicle. Plugs are going to match up perfectly. And they got the locking tabs for a nice, tight, secure fit.

The connector with a green wire, that's going to run over to the passenger side of the vehicle. So once you have those connection points found and you plug in the connectors, you're going to need to find a suitable grounding location and make your ground connection using your white wire with the ring terminal attached to it. You can get that secured in a nice, clean, metal surface, using the included self-tapping screw. That's going to be included with this kit. Then you can mount the black converter box using the provided double-sided adhesive tape. Simply just peel that, stick it on the back, and stick it to a nice, clean, out of the way location. Next step is going to be to run the hot lead to the vehicle battery.

Hot lead's going to be this black wire, right here. That's going to get connected to the bundle of black wire using one of the included butt connectors. The other end of the black wire is going to run all the way up to the vehicle battery. The other end's going to get connected to one half of the fuse holder. So you'll cut the fuse holder wiring in half, connect one end to the black wire using another butt connector, and then the other end's going to get connected to the positive post of the vehicle battery using the included ring terminal. It's going to come with the 15 amp fuse. It gets installed in this area right here, and then you close that fuse cap to secure it in place. Next thing is going to be to go ahead and use the included cable ties to secure any excess or slack in the wiring, keeping it safe and out of the way. It's going to come with detailed instructions. These are going to help you with the installation, walking you through step by step. Now, when it comes to the maximum amperage for the stop and turn lights, we're looking at 4.2 amps per circuit. For the tail lights, we're looking at 7.5 amps per circuit. It's also recommended that you use a small amount of dielectric grease on all electrical connections, like the plugs on the vehicle in the four pole connector itself. That's going to help prevent any type of corrosion from settling in. If you don't have any of that grease, you can find that here on our website under the related items, and that product is going to be sold separately. That's going to do it for today's look at part number 118675.


Info for this part was:

Employee Andrew K
Video by:
Andrew K
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Cole B
Installed by:
Cole B
Employee Andrew S
Test Fit:
Andrew S
Employee Ryan G
Test Fit:
Ryan G

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