7 Way Trailer Wiring Diagram Gm. The thing is I have to go to the tail lights to make attachments. The wiring diagram is color coded and shows both the trailer side and the vehicle side.
I double checked the wiring in my truck vs. the wiring diagram and it was the same. I posted about that very thing here. You'll have to add some wires, but it isn't too hard to figure.
You'll have to add some wires, but it isn't too hard to figure.
I double checked the wiring in my truck vs. the wiring diagram and it was the same.
Learn all about trailer wiring testers at HowStuffWorks. Automotive Accessories Connection. "Trailer Wiring Diagrams." Trailer wiring guide, including best practices for automotive type wiring systems and how to install a new trailer connector pigtail.