Troubleshooting Turn Signal Lights Not Working on New Utility Trailer

Question:

I just bought a new utility trailer and all the lights work except the turn signals

asked by: Nathan L

Expert Reply:

If just the turn signals aren't working on your trailer I first recommend testing the connector on your tow vehicle. Use a circuit tester like # PTW2993 to test the pins on the connector while you have a buddy activate the turn signals. Make sure you are getting appropriate power at the pins with the turn signals activated. If not, then there is an issue somewhere with the vehicle wiring. There may also be a fuse or relay that needs to be replaced (check your owner's manual for the fuse/relay locations).

If you do get power at the connector then you can turn your attention to the trailer. Inspect the trailer side connector for any debris or corrosion caught inside the pins, cleaning out as needed. Make sure all your grounds are made to clean, bare metal surfaces that are also free of debris or corrosion. This also goes for the light assemblies themselves, whether they ground through their mounting hardware or with a dedicated ground wire.

If you still aren't able to locate and resolve the issue, please let me know and we can continue to troubleshoot. I have also attached an article on common wiring issues that you might also find helpful.

expert reply by: Chris R