No backup wiring harness on truck

1989 FORD F-150
51,000 MILES • 5.0L • V8 • 4WD • MANUAL
Avatar
OZZIESSTANG
  • MEMBER
  • 2 POSTS
The truck is nearly show quality for its age. I purchased a new rear bumper with accent backup lights on the bumper. I went to connect the wires and found that there were none. I went back to the backup switch on the Mazda four speed transmission and discovered there is nothing there for wires. One of the previous owners has done some questionable wiring throughout the truck which I have tried to repair, but I have no idea what to do if there is no harness for the backup lights. Is there a simple way to create a wiring harness for this? I have looked at bone yards but none have a similar vehicle. I do not know what to do. I just purchased a new switch and pigtail but do not know what to do from there. Randy
Sep 6, 2018 at 11:08 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,176 POSTS
Hello,

The reverse light switch is on the transmission. Here is the wiring diagrams so you can see how the system works and the location of the reverse light switch. Check out the diagrams (below). Please let us know if you need anything else to get the problem fixed.

Cheers, Ken
Images (Click to enlarge)
Attached Media
Attached Media
Sep 6, 2018 at 5:33 PM
Advertisement