wiring and diagram

This is Borg Warner’s original wiring diagram scanned from a 1965 Chilton’s manual. If you have an all original truck with the overdrive, this diagram should be usable. The DPDT relay in my circuit substitutes for the special kickdown switch that mounts above the gas pedal in the old vehicles.

 1964 Gmc Truck Electrical System Wiring Diagram Circuit Schematic.