Factory Wiring Diagram
Click on any of these to get to the full size file for printing or downloading.
This following is what i did when i put a speedway 21 circuit wiring harness in my 78.
Instrument Cluster
Turn Signal Switch
Led Flashers
These plug into your factory locations but do need to be grounded. this link is for 2 of them.
How a turn signal switch operates
Headlight Switch
Wiper Switch
