 Battery Connection Help |
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| AvalonFal |
  Aug 19 2014, 03:21 PM
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Member  Group: Members Posts: 483 Joined: 3-July 05 From: Southern New Jersey Coast Member No.: 4,367 Region Association: MidAtlantic Region  |
I've been having problems with the battery draining over a couple of days of non-use, so I'm intending to replace the PO's battery cables (a few splices in the current ones) and go from there. PO relocated battery to the rear trunk & that's OK. However, I came across this situation:
- Engine off, key out. - (+) battery cable disconnected at battery - (-) battery cable still connected I measured across the disconnected (+) cable to the connected (-) cable & got a voltage of around .6 - .75 volts. Is this normal to have voltage across a disconnected (+) cable?? Car starts fine when battery is charged, but, as I said, battery loses juice after being idle for a couple of days. |
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| stugray |
Aug 19 2014, 06:10 PM
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#2
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Advanced Member Group: Members Posts: 3,825 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None |
Is there an aftermarket stereo in the car?
Or is the meter on AC Volts? (if on AC, then they can pickup that much noise). Meter leads in the correct holes on the meter? Edit: Another way you can see voltage on the car side with no battery hooked up: Galvanic reaction (you car is rusting right before your eyes) |
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Posts in this topic
AvalonFal Battery Connection Help Aug 19 2014, 03:21 PM
AvalonFal Yes, there is an aftermarket stereo in car. Meter ... Aug 20 2014, 06:32 AM stugray You are probably seeing residual voltage for the c... Aug 20 2014, 07:27 AM 914Mels If your looking for a battery draw, you need to be... Aug 20 2014, 02:24 PM Rand I would pull fuses and see when the parasite stops... Aug 20 2014, 06:58 PM AvalonFal After pulling fuses, relays, pins, cables and cutt... Aug 22 2014, 02:21 PM 914Mels jump one of the wires and see if you regain your f... Aug 22 2014, 02:41 PM stugray Put the meter in current mode (this usually requir... Aug 22 2014, 04:02 PM mikesmith The wire going to the ignition switch is (almost) ... Aug 22 2014, 11:57 PM ClayPerrine Here is another way to measure amp draw on a car e... Aug 23 2014, 07:04 AM Tom There is a very much easier way to make a shunt.
... Aug 23 2014, 12:39 PM AvalonFal Thanks everyone for the electrical info.
Getting ... Aug 23 2014, 03:12 PM
stugray SO the draw is downstream of the the connection at... Aug 23 2014, 04:39 PM |
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