Trailer Wiring Harness Not Working On a 2013 Volkswagen Tiguan

Question:

I purchase this kit for my 2013 Tiguan and installed it using the BM-4 3-wire instruction, but on completion and testing, I get no lights on my trailer I previously had a 2011 Tiguan and installed this kit successfully, but using a different BM scheme that did not call for grounding the red and brown leads. Can you verify that the 2013 Tiguan should be set up using the BM-4 method. I want to verify this before I go back and try to troubleshoot. I believe something that I received tied the 2013 Tiguan to the BM-4.

Expert Reply:

There is actually a plug-in style wiring harness available for your 2013 Volkswagen Tiguan, # 118675. Using this harness will prevent you from having to cut and splice wires. It is possible that you will need to follow a different installation method for the 119190 harness but if you still have problems you can troubleshoot the harness.

To troubleshoot your 119190 harness, if there is power at the 4-Way and all the signals are correct AND the trailer has LED lights then you will need to use an adapter. But first you would need to install # 37185, plug in your 4-Way, and ground the white wire to the vehicle frame. The other wires are not needed. Then you can use adapter # TR20141 which is designed for use on certain German vehicles towing trailers with LED lights.

The other thing you can do is install load resistors, # P230004A, on each circuit on the trailer. This will provide more amperage draw on the system so the trailer lights will work.

expert reply by:
Michael H

Ask The Experts a Question >>


Products Referenced in This Question





Product Page this Question was Asked From


Similar Expert Q&A Pages

See More Q&A Expert Answers >>




^
About Us
photos and videos
1,056,204

Original Photos & Videos

Produced to make sure you know what you are getting and you get exactly what you need.

installations
35,570

Installations Completed

To make sure products work and fit the way they are supposed to.

etrailer call center
2,476,511

Phone Calls & Emails Answered

1,125,924 phone calls and 1,350,587 emails to help find the right solution.

etrailer training
400+

Average Hours of Product Training

We get to know our products firsthand so experts can better help you.

etrailer service
71

Years of Quality Customer Service

Assisting our neighbors and customers, face to face at the counter.

etrailer experts
193,357

Pages of Expert Information

Created to make sure you have all the answers to your questions, from real experts.