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Re: 2004 C4500, speedo @70 mph and temp gauge pegged
Posted to HD/Fleet Forum on 3/8/2007 4 Replies

Pulled the instrument cluster out to check the connector. found a couple dark spots on the back of the circuit board. the connector was loose where it sits. put elect tape on the bracket it slide onto to tighten it up. Had 9.4 volts at the terminal for the spe... Login to read more.

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