1972 GMC Sierra c2500, electric

[Captain J]

Originally Posted by RichardJ

The 4 Amp fuse should be connected to the Junction block at the battery. The wire goes through the firewall connector, directly to the Ammeter. A second wire from the Ammeter comes back out to the other 4 Amp fuse.

You could have a short anywhere on those wires or something shorting the back of the Ammeter.

Excellent illustration, my ammeter works now without this wire, which means previous owner wired it differently,
Should I rewire it back, as you indicated above, or just leave it?
Note: I just bought this car.
Thanks