Home Auto How to Install a 1-Wire GM Alternator

How to Install a 1-Wire GM Alternator


Installing a one-wire GM alternator makes the process of adding an alternator to a vehicle originally equipped with a generator very simple. One-wire alternators are also used by people in the performance car field to help make the car lighter as there are fewer wires to add weight to the vehicle.

Step 1

Disconnect the negative battery cable at the battery.

Step 2

Mount the alternator to the engine. These alternators were not used in cars so you may need to fabricate a mounting bracket. You might also find a bracket that will work at a local junkyard. If you must make your own brackets flat-steel stock, 1/4-inch thick and about 1 1/2 inches wide will work well. Bend the ends 90 degrees to form a cradle for the alternator and drill a hole in both tabs to slide a bolt through, which will hold the base of the alternator.