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1972 Chevy Blazer upgrading the electrical harness

Tiny
72CHEVYBLAZER
  • MEMBER
  • 1972 CHEVROLET BLAZER
  • V8
  • 4WD
  • AUTOMATIC
  • 10,000 MILES
I just installed a new harness from painless into my 72 blazer. I keep having the problem now of my battery draining and can't seem to find the problem. I've done a few different draw tests, yet nothing, unless i'm not getting the right info on how to do them right. Any ideas?
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Friday, January 15th, 2010 AT 9:37 AM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Welcome to the forum, the older way to test for battery drain is to use a testlite, you take a battery cable loose, place the testlite between the end of the cable and the battery post, if the lite comes on, you have a battery drain. You pull fuses one at a time, till the lite goes out, whatever fuse circuit caused the lite to go out, is the problem circuit. Maybe a lite that stays on somewhere, best time to check, is in the dark.
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Friday, January 15th, 2010 AT 10:54 AM

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