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Old 07-22-2017, 10:16 PM   #16
C10Coloradoguy
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Join Date: Jul 2017
Location: Highlands Ranch, CO
Posts: 39
Re: Rewired 70 C10 heater and running lights on even if ign is not plugged in.

Finally got behind the dash. Found two things. An open ground wire which could have been affecting all of the dash wiring, or the more likely culprit of my patchwork circuit board which I have tested and have not been able to get to work properly no matter how much surgery I perform. I'm ordering a new circuit board and will post results.
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