Troubleshooting Trailer Turn Signals that Only Function when Running Lights are On

Question:

I seem to have a problem with the brake lights. I connected everything even checked the grounds 5 times and every thing looks and seems well connected. The running lights work, the turn signals only work when the running lights are on, and the brake lights dont work. The brake lights do go off when the running lights are on. This is my 4th trailer that I wired lights on but different vehicle I am using. Any ideas?? Thanks!

asked by: Anthony J

Expert Reply:

It sounds like you wired the running light circuit to the brighter stop/turn circuits of your trailer wiring and the stop turn circuit to the dimmer running light circuits.

Try reversing the wires that are run to each light assembly to see if that causes them to work properly.

expert reply by: Jameson C