How to Hook Up a Single Wire Alternator
by K.K. Lowell
The General Motors one-wire alternator needs to have only one wire connected to operate. This feature has made this unit popular with car enthusiasts and off-road truck builders. With the proper brackets, this alternator can be used with just about any engine and vehicle combination.
Step 1
Mount the alternator to the engine. It may be necessary to fabricate brackets if they are not available from a speed shop or junkyard. Be certain the belt lines up straight in the pulleys.
Step 2
Disconnect the negative cable from the vehicle battery.
Step 3
Connect a 10-gauge wire from the output stud on the alternator back to the positive battery terminal. Make both connections with a solderless ring terminal. This connection can be made at the starter relay also, as long as it connects to the same terminal as the positive cable from the battery.
Step 4
Reconnect the negative cable to the battery.
Things You'll Need
- 10-gauge wire
- Solderless ring terminals
- Solderless terminal crimping tool
Writer Bio
K.K. Lowell is a freelance writer who has been writing professionally since June 2008, with articles appearing on various websites. A mechanic and truck driver for more than 40 years, Lowell is able to write knowledgeably on many automotive and mechanical subjects. He is currently pursuing a degree in English.
