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Old 12-05-2020, 04:28 PM   #20
72bowtiestepper
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Join Date: Feb 2013
Location: Northwest NJ
Posts: 684
Re: Strange turn signal issue on 72 C-10

Quote:
Originally Posted by Rick Bollinger View Post
There is a small screw that goes through the printed circuit on the back of your gauge cluster. This is the primary ground for all your dash lights including your turn signal lights. This screw contacts your ground loop in your printed circuit and the back of your instrument panel. If this is not making a good ground at this screw it will do what you describe. Yes just a small 1/4" screw can do all of this. It allows power to back feed through your harness and cause kaos
Thanks for that info. Rick !
Will check that out when I have the cluster out...I am replacing the fuel gauge before putting the truck on the road.
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