• Tiny
  • Wayseeker
  • 1973 Ford LTD

Electrical problem
1973 Ford LTD V8 Two Wheel Drive Automatic 126, 00 miles

What would drain battery while sitting still with no accessories on? Battery is new.

Wednesday, October 14th, 2009 AT 5:38 PM

1 Answer

  • Tiny
  • hmac300
  • Expert
  • 43,014 posts

Hopefully you are talking about when the car is parked and not running. Otherwise your alternator isn't charging. But if this hapens while parked, hood light and trunk lights are big culprits. The best way to check this is to put a test light between tthe positive post and cable so that it lights. Then start pulling fuses out of the box to locate what circuit is causing the drain. Start with the courtesy circuit first. When the light goes out you've found where the drain is. If it stays on when all circuits have been checked then it may be your alternator as the diode bridge has blown out and letting power slip back through where it's not supposed to.

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Wednesday, April 28th, 2010 AT 5:50 PM

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