The joys of wiring....1965 c10 harness blues

[ray_mcavoy]

Originally Posted by lha1992

So you are saying place one on the wire that's listed B/W that goes to the horn relay from the ammeter?

Yes, that's the wire. I forgot to mention that the diagrams use the abbreviation "B/W" for black with white stripe but it looks like you figured that out

Originally Posted by lha1992

My truck has had pretty bad hack jobs of PO's working on the wiring such as they put a volt meter in wired from some boxthing on the fire wall thatsn tied into the BAT terminal on the alternator that also feeds one of the spot lights. I'll get more pictures up in just a bit of it all.

The fact that they added a volt meter is probably a good indication that the factory ammeter quit working. It could be as simple as that black wire no longer being connected to the starter solenoid BAT stud. But while you're working on the wiring, it would be a good idea to take a close look at the rest of the ammeter wiring (including the wires under the dash) just to make sure it's all in good condition and still connected as shown on the diagrams Lugnutz65 posted.