Ok,
With my handy dandy wiring diagram I found in the folder with her new(old) swc, I've been tracing this problem I'm having. When we got the car the PO said the battey goes dead after some time and thought it was the clock. Well, discovered yesterday while working on a cold engine, I leaned on the alternator, and it was warm, very warm. All I could figure was the field was on. Sure enough, with key off, I get 12.5v at the field teminal, and 9.75v at the R terminal(black). Traced for a while and can't figure why.
The regulator supplies the field voltage(blue wire), coming from the "F" terminal via a #20 dark blue wire to the alt 2 pin plug. Reg terminal 4 is a #20 black w/purple tracer wire which goes to the firewall plug behind the fusebox. It then turns into a #20 brown on the other side. This brown goes to a junction with 5 other browns, and comes from the accsy position of the ign switch. I see it switch to 12.5v when the ign is on or accsy on. With terminal 4 disconnected at the regulator I still get 12.5v at the blue field wire. Terminal 3 of the reg is always 12.5v, coming from the junction of the #12 red battery wire at the horn relay tie point.
My wiring diagram shows the 5 red wires as a 2 separate junctions at the horn relay tie points, one with 3 wires, the other with 2 wires. The actual relay has 2 screw terminals for these wires, but all 5 wires get tied together because the 2 relay terminals become one junction. Is this right? If so, then maybe my regulator is bad. It's a riveted replacement so I can't get in it without drilling them out. Also, I don't seem to get any movement in the ammeter in the dash when loaded or running. I know the alt is charging when engine running as I get ~13.8v at the battery.
Ideas?
Thanks,
Rich
Here's my wiring info and copies from my motors manual
With my handy dandy wiring diagram I found in the folder with her new(old) swc, I've been tracing this problem I'm having. When we got the car the PO said the battey goes dead after some time and thought it was the clock. Well, discovered yesterday while working on a cold engine, I leaned on the alternator, and it was warm, very warm. All I could figure was the field was on. Sure enough, with key off, I get 12.5v at the field teminal, and 9.75v at the R terminal(black). Traced for a while and can't figure why.
The regulator supplies the field voltage(blue wire), coming from the "F" terminal via a #20 dark blue wire to the alt 2 pin plug. Reg terminal 4 is a #20 black w/purple tracer wire which goes to the firewall plug behind the fusebox. It then turns into a #20 brown on the other side. This brown goes to a junction with 5 other browns, and comes from the accsy position of the ign switch. I see it switch to 12.5v when the ign is on or accsy on. With terminal 4 disconnected at the regulator I still get 12.5v at the blue field wire. Terminal 3 of the reg is always 12.5v, coming from the junction of the #12 red battery wire at the horn relay tie point.
My wiring diagram shows the 5 red wires as a 2 separate junctions at the horn relay tie points, one with 3 wires, the other with 2 wires. The actual relay has 2 screw terminals for these wires, but all 5 wires get tied together because the 2 relay terminals become one junction. Is this right? If so, then maybe my regulator is bad. It's a riveted replacement so I can't get in it without drilling them out. Also, I don't seem to get any movement in the ammeter in the dash when loaded or running. I know the alt is charging when engine running as I get ~13.8v at the battery.
Ideas?
Thanks,
Rich
Here's my wiring info and copies from my motors manual
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