Stock 89 Commanche Pickup;
Running lights and dash lights died.
Power to fuse; but short blows the fuse.
Disconnected the rear lights at the connectror; still shorts.
The Reverse, Stop and Turn lights are fine.
1. Where can I download a wiring diagram/schamtic for these?
2. What are the diagnostic assumptions for find the short? I assume, (but don't know):
a. the blue wire is the common wire for all front/rear running lights and the dash back light?
b. disconnecting the rear harness; will isolate the front running lights and the dash lights.
c. these are simple Hot+ from the switch; to ALL blue wires; through the bulb; to ground.
d. there is no clever ground interrupt system.
e. the black wire in the rear harness is -Ground.
Running lights and dash lights died.
Power to fuse; but short blows the fuse.
Disconnected the rear lights at the connectror; still shorts.
The Reverse, Stop and Turn lights are fine.
1. Where can I download a wiring diagram/schamtic for these?
2. What are the diagnostic assumptions for find the short? I assume, (but don't know):
a. the blue wire is the common wire for all front/rear running lights and the dash back light?
b. disconnecting the rear harness; will isolate the front running lights and the dash lights.
c. these are simple Hot+ from the switch; to ALL blue wires; through the bulb; to ground.
d. there is no clever ground interrupt system.
e. the black wire in the rear harness is -Ground.