1990 Cadillac Hearse electrical drain on battery

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.

Monday, June 8th, 2009 AT 7:09 PM

1 Reply

MHPAUTOS

MECHANIC
31,937 POSTS

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