Changing from factory alternator to one wire mustang
#2
Senior Member
SENIOR BUILDER
Join Date: Nov 2007
Location: Tukwila, WA
Posts: 115
The only wire needed for the one wire alt. is the heavy guage wire that usually runs to the starter post. None of the other plugs are needed but your guages won't work. With the one wire alt. if the engine is running it should be charging.