Old Gm Alternator Wiring. Delco 3 wire alternator wiring diagram A Novice s Overview to Circuit Diagrams A very first look at a circuit diagram might be complex however if you can check out a subway map you can read schematics. 800 x 600 px source.
Regardless of the name the important difference is that they are designed to work with an external regulator. Most of the connectors for the CS alternators are four wire but will only use two of them and the wiring is the same as the SI. How to make an external voltage regulator fro an alternator.
These older style alternators can be referred to as a 2-wire 3-wire or even 4-wire.
One of the key differences is how the internal voltage regulator determines charge rate. This diagram shows how to wire a Delco GM internally regulated 3-wire alternator. How to make an external voltage regulator fro an alternator. GM Externally Regulated Alternator.