Pulling power from drivers door?

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Oct 26, 2007 | 08:56 PM

jimmbomb

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Joined: Jul 2007

Posts: 967

From: St Louis

Pulling power from drivers door?

I want to pull 12 vt + - from the drivers door power window harness.

Now I get power from one of the Blue wires when the ignition is turn on, which is what I want.
BUT my test lead has to be grounded to the cars body to get it.. NOT to the door's body. There is no ground running thru the door sheetmetal.
SO. I figure that one (or more) of the wires in the harness must be a ground! ya think?? I mean how else would the circuits work without power & grounding..
So my question is... Which of the remaining wires are a ground (-) ?? I dont want to hook up a test lead for fear of blowing a c/beaker or fuze. Any help wouold be apreciated.. thanks.. .. jh

Oct 26, 2007 | 09:40 PM

xseveredveganx

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Utah Scions
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Joined: Aug 2007

Posts: 4,139

From: City of Salt, Utah

If you're using an idiot light, hook 12+ to your aligator clip, then use the probe to find 12-. I've done it before on other cars and it's worked fine.

Otherwise just use a DMM.

Oct 26, 2007 | 10:18 PM

jimmbomb

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Joined: Jul 2007

Posts: 967

From: St Louis

Quote:

Originally Posted by xseveredveganx

If you're using an idiot light, hook 12+ to your aligator clip, then use the probe to find 12-. I've done it before on other cars and it's worked fine.

Otherwise just use a DMM.

xseveredveganx.. you are a friggin' U-Genius!!! Good Answer.. I did just that & found it.. On the lower row... the Blue is the + & the white/black stripe is the - when ignition is ON.. Thanks a million. Now on with the project!.. jh