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Ammeter Wiring 3 Wire Alternator To Chevy. The Number 1 wire on the 10- or 12-SI is connected to the charge warning light on the dash. They used what we call today a clamp-on ammeter.
The 10- and 12-SI units use a different two-wire connector plug on the rear of the alternator. With a one-wire install simply connect the charge wire from to alternator battery post left to the battery. New alternator - Old ammeter 06-26-06 0715 AM - Post 959453 In response to rdsandman It just consists of wiring a bypass to the old external regulator so the internal alternator will work correctly pretty common and then de-rating the ammeter gauge so that it doesnt read as high adjusting the shunt resistor on it.
You can use the original wire by hooking it to the positive terminal on the voltmeter but you must also run a wire from the negative terminal to a ground source.
Remove the alternator mounting bolt with an appropriately-sized socket wrench and separate the alternator from the vehicles body about 14 inch. Delco 3 wire alternator wiring diagram A Novice s Overview to Circuit Diagrams. Remove the alternator mounting bolt with an appropriately-sized socket wrench and separate the alternator from the vehicles body about 14 inch. How to wire a GM 3 wire alternator for a tractor vs a car plus this setup doubles as a 63 amp fast battery charger.