Troubleshooting Running Lights on Trailer with 4 Way Connector

Published 02/10/2020

Question:

2018 Ddoge Journey with 4way I installed over a year ago. I used it a lot for a few months and it worked great. I haven't used it in about 8 months and just tried to tow my trailer today and my running lights aren't working. Turns and stops work just fine. Wjere should I start?

asked by: Curt

Expert Reply:

First, check your 4-way connectors at the vehicle and trailer. Be sure they are clean and free of corrosion. Since the trailer has been sitting for 8 months there is a good chance this is all it needs.

Second, I recommend using a circuit tester like the # PTW2992 to test each of the probes on all of your Journey's connectors. This can help you determine if your problem is on the vehicle or on the trailer. I have included a demo video of this circuit tester for your convenience.

Once you isolate whether the wire needing repair is on the vehicle or the trailer, you can trace it up the vehicle looking for a loose connection or break in the wire. If the wire is on the trailer you can trace it looking for the same problems.

I have also included a link for some additional troubleshooting suggestions.

expert reply by: John W