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Old 04-28-2020, 08:39 PM   #12
ray_mcavoy
Registered User
 
Join Date: Nov 2009
Location: Sherman, ME
Posts: 2,358
Re: 66 cluster/gauges questions before reinstalling

Cool! Looks like your fuel & temp gauges are okay.

Sounds like the batt gauge (ammeter) might have some issues though. There are three 1/4" hex head shetmetal screws that hold the temp & batt gauge assembly into the cluster. If you remove those, you can pull the backing plate that holds both gauges out through the back.

Then take a close look at the wire coil on the back of the batt gauge. Sometimes they get overheated due to connection problems in the truck's wiring that allow too much current to flow through the gauge. That usually results in a darkened / burnt / discolored look of the coil itself and sometimes even the surrounding parts.
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