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Ground Issue?

just1me

Well-Known Member
Joined
July 3, 2010
Messages
473
Reaction score
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City, State
Pryor, OK
Year, Model & Trim Level
1998 Ranger Stepside 2.5
I have a question, I been looking at alot of wiring diagrams lately. My 2001 Explorer Sport has 2 issues, but I wonder if they are connected somehow.

First the tachometer works intermittently sometimes works perfect, other times stays at 0 and never moves.

Second the radio it has the Premium Cd/Cassette model, some of the back lights for the buttons on the radio are out, this is not the rds model.

I was wondering if perhaps this could be a ground issue the tachometer at times works fine and other times not at all, and there been times the radio lights have worked, and then not at all, do these 2 share a common ground?

Thanks I appreciate any help.
 






Not a ground issue. same ground is used to ground the whole radio.

the ic gauges also use the same ground. so if the ground was bad, all would not work. not just one.

sounds like the radio inside is dying and the tach gauge is bad.
 






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