Originally Posted by K and K
The 57' Caddy I just picked up has an alternator just hanging out in the engine compartment. Not wired up and not bolted up right. These originally came with generators correct? So when wiring it up, this alt has the main charge wire, and the two prong flat blade plug. If I remember right, arent these two wires at the plug a field wire and an exciter wire? Where would I wire these up in a car that originally came with a generator?
I recently did this swap on my 62 Olds. The first question is, what alternator do you have - internal or external regulator. You want one with an internal regulator, which will have a plug that looks like this:
If so, then the red wire from the plug and the large red wire from the threaded BATT post on the alternator both go to the terminal post on the car. This will likely be on the horn relay. The brown wire from the alternator plug goes to the brown wire to the GEN light on the dash. This wire should be connected to the voltage regulator from the generator if it's still there. That's all there is to it. Just mount the alternator properly and get the right belt and you're good to go.