IBenDcars,
Did your '62 originally have a generator with firewall mounted voltage regulator...I think so! If someone removed the generator and installed a old style externally regulated alternator, then they also had to swap voltage regulators.
If you have just put on a newer (old now) SI, or internally regulated alternator, then you no longer need or use the firewall mounted voltage regulator.
The two styles of SI alternator would be a single wire version or a three wire version. Neither would use the voltage regulator, but the three wire version will have a small two prong plug on top of the case as well as the large BATT wire for output. The small two prong plug is referred to as a DA plug and it allows the alternator to monitor system voltage and to switch on and off to charge and needs to be wired into the system for this to happen.
So there are three kinds of alternators; old one with regulator on the firewall, newer one with three wires and internal regulator, and the simplest one, with only one wire. These are all connected differently.
Stuart
