Alternator installation issue

1992 CADILLAC DEVILLE
128,000 MILES • 4.9L • V8 • AUTOMATIC
Avatar
TERRENCEMANN 100
  • MEMBER
  • 1 POST
Trying to figure out how to hook up an alternator with heated windshield. The car had an alternator with no heated windshield and the plug had one wire. I got a new plug, and it has three wires. Do I just hook up my brown wire and leave other two off?
Jun 27, 2022 at 7:05 PM
Advertisement
Avatar
STEVE W.
  • ✓Experienced Mechanic
  • 15,318 POSTS
They both use the same wiring, the difference would be on the back of the alternator where the three power outputs for the heater element go, you do not want them exposed at all. They carry enough 3-phase current that even momentary contact can do serious damage.
So, the plug on the car should work just fine.
Image (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Jun 27, 2022 at 7:42 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.