The parking lights and stop-turn signals are two different circuits so you would need to check the turn signal circuit coming out of the trailer plug on the truck first. You should have one wire in the plug for each side, and they should be hot when the turn signal switch in in that position and the light is flashing on the truck.
Answers & Comments
The parking lights and stop-turn signals are two different circuits so you would need to check the turn signal circuit coming out of the trailer plug on the truck first.
You should have one wire in the plug for each side, and they should be hot when the turn signal switch in in that position and the light is flashing on the truck.