Slant 6 Voltage Regulator Syracuse Nationals

The original ground in that car was good enough - if both of them are connected. The starter ground carries the charging load on the ground side.

If the body ground wire at the firewall to the engine block is missing or not connected, you can have all sorts of odd issues.

If you want to add a third ground wire, run one from the battery negative to the radiator support - 10 or 12 gauge. Just make sure the other two ground wires are tight, and clean at the connections.

The broken connectors are common on our 40+ year old cars. You can use the one piece insulated connector in the pic below, or you can use the two pieces on the left to assemble a connector like it originally had if you like:



What were the results of your voltage checks?

What was the KOEO voltage on the green wire?

What was the charging voltage with the alternator full fielded?

What was the battery resting voltage?

B.