3g alternator 1 wire conversion. | Maverick/Comet Forums mmbrick›Maverick/Comet Forums›General Maverick/CometDec 10, 2016I have a 3G 1-wire on mine. Often they run the yellow sense wire to the output terminal on the rear of the alternator. Then it doesn't adjust for the voltage drop in the charge cable to the battery. Under heavy load the system voltage would drop. I removed the yellow wire from the output terminal, extended it and ran it to the battery + terminal. Ford 1 Wire Alternator | eBay FORD MUSTANG 1-WIRE 3G Small Body NEW ALTERNATOR 1965-1988 160 AMP. BRONCO 5(302) V8 1973-1977. This alternator is originally 3G SMALL BODY we upgraded to one wire. CHEROKEE 5(360) V8 1976-1977.