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Hello everyone I've got this cadillac that I'm beating my head against the wall with. Here's the problem battery drains overnight. I can take away power supply to both fuse boxes and the test light i have between the battery and the negative cable stays lit so I'm thinking its something more direct that doesn't run through fuse box any thoughts would help. THANKS
dustin.combs wrote: ... and the negative cable stays lit so I'm thinking its something more direct that doesn't run through fuse box any thoughts would help. THANKS
I think Cheryl is on the right track with the alternator since you already bypassed everything by taking the fuse boxes out of the equation.
I've never been able to find a draw with a test light in series, but every one I know does it that way so it must just be me
If you strike out with the alternator, I would start from scratch with an amp meter.