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Old 03-06-2010, 11:34 PM   #1
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Angry Alternator Harness?

Recently i left my tj in reverse when i parkd it, the reverse lights stayed on and drained the battery. I have a red top optima and ive had to charge it because ive done similar stupid things, lights etc... and its always workd fine. After i charged it and put it back in the voltmeter on the dash was only reading 12v instead of the 14 that it usually does, and after a couple of minutes the gauge pegged out to the 9 v.. i know for a fact the battery didnt go dead that fast.. initially i thought maybe my alternator went bad. I had a dude at autozone run a test on it and as soon as he hookd the test kid to my battery the voltmeter went back to 14 volts and i lookd like an ass. i turned it off, started my jeep again and it still read 14. gremlins i thought.. but about 30 minutes later the initial problem came back.. i removed the alternator and had it tested at kragens, it tested fine, so i am left with the question... "WHAT IS GOING ON??" i replaced the alternator and its still repeating the initial gripe. ANY IDEAS??

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Old 03-07-2010, 12:45 AM   #2
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Optima batteries are known to suck now... might wanna have the battery itself tested.

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Old 03-08-2010, 12:00 PM   #3
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Get your electrical system checked. Reverse lights are supposed to turn off when the key is off.
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