If you're in the market for a new GM alternator that can really deliver, let Procomp Electronics Procomp Electronics hook you up! These GM single wire alternators come ready to install for all GM one-wire internal regulator applications. They feature a sleek chrome finish with an aluminum housing and have a 120 amp capacity. Remember, a one-wire alternator means just that! You can simply connect one wire from the alternator to the battery, and you are good to go!