Batt, Alt, or Slow Drain?

classicauto · 07-10-2008, 10:32 AM

Are you running a stock alternator?

Check the voltage at the battery with a DMM when its running. Stock gauge isn't all that reliable.

If you're getting a major drain with the headlights on, I'd start poking around there for something thats shorting out, or some wiring with high resistance. I've seen some headlight harnesses (from the stock three prong plug back) that are pretty green/black inside.

07-10-2008, 10:32 AM	#2
classicauto crash auto?fix auto Join Date: Feb 2008 Posts: 816 Rep Power: 18	Are you running a stock alternator? Check the voltage at the battery with a DMM when its running. Stock gauge isn't all that reliable. If you're getting a major drain with the headlights on, I'd start poking around there for something thats shorting out, or some wiring with high resistance. I've seen some headlight harnesses (from the stock three prong plug back) that are pretty green/black inside.