Two-wire Alternator:
Most standard and all self-exciting regulator alternators will work using the two wire setup.
Two wire means that you use the main battery wire to the back of the alternator and also ignition wire to the
#1 terminal to activate the alternator. With this setup the alternator starts charging as soon as the engine is running
Three-wire Alternator:
This setup uses a battery wire, ignition/warning light wire and voltage sensing wire, Three wires. Voltage sensing is used when you want
the alternator to read voltage at some other point than the battery. Or the battery wiring is such that the battery is a long distance from the alternator.
Yup. I took a good look at it today and sure enough there are two wires on the back (red battery andblack ground) but there is also a plug on the top that I did not recall - so yes, this is actually a three wire. I suppose I will need to reuse my old alternator for now. I really wanted the chrome with the bow tie :-( Oh well - I will change this down the road when I change out the fan for an electric one. I guess it will be baby steps. Which is perfect for me I suppose - still learning and all. Thank you for the information !
Good Morning Ghost,