No Trailer Running Lights On Trailer But Stop/Turn Signals Works

Question:

no tail lights even though tested curcuit is in the taillight The brakes and turn signal works and ground is in attached metal holder and bolts and is good

asked by: Randy L

Expert Reply:

It sounds like you are having issues with your running lights which are actually on a separate circuit than the stop/turn lights. The first thing you will want to do is test the running light pin on the vehicle side trailer connector. If you don't get power here then you may have a blown fuse or shorted wire. If you do have power then apply power to the running light pin on the trailer side trailer connector. If the lights do not work then you most likely have a short in the running light wire but make sure to check over both the trailer and vehicle side trailer connectors as well.

If the above does not work please provide me with the tow vehicle and wiring harness used so I can see if other options are available. I have also attached for you a trailer wiring help article you should look over.

expert reply by: Conner L