To run down a short in a wire you will need to use a circuit tester, item # PTW2993 if you need one, to test the wiring and find the short. The place I would start is on the vehicle side of the converter. Check each wire there, with a helper to turn on turn signals and step on the brakes and be sure that each circuit is functioning properly. While you are behind the taillights make sure the ground wire is attached to a good grounding point.
Next I would test the wiring coming out of the... view full answer...
A fuse blowing indicates to me that there is a short. If it happens when you connect the trailer to test the lights then that would indicate a problem on the trailer side.
Lets first look at the wiring harness on the van. Make sure the ground wire is attached to a clean metal surface. Moving the ground might help. When you plug in the 4-Way to the adapter, # 30717, make sure the connection is good and tight. You must have the ground wire from the adapter also attached to the vehicle frame.
This... view full answer...
Go To Results