1990 Cadillac Hearse electrical drain on battery

Tiny
GRAYWOLF28
  • MEMBER
  • 1990 CADILLAC HEARSE
  • V8
  • 2WD
  • AUTOMATIC
  • 60,000 MILES
I own a 1990 Cadillac Fleetwood Hearse. I have just put a new battery in it and it seems to be going dead in only a few hours. I have checked the alternator and it's fine. I can't seem to find what is draining the battery. I've been pulling fuses and still can't find the drain. Also the car has 2 batteries. Can anyone tell me what the second battery is being used for.
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Monday, June 8th, 2009 AT 7:09 PM

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Tiny
MHPAUTOS
  • EXPERT
Hi there,

not sure what the second battery is for, but if it is flat I will discharge the main battery if connected to it, remove the second battery charge the main battery and place an amp meter between the battery Pos terminal & the lead, with key off and doors closed, check currant draw, if over.2 Amps you have a open circuit some where, do this and report your findings.

Mark (mhpautos)
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Monday, June 8th, 2009 AT 7:20 PM

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