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gauges not registering on start up

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trying to get friends 2000 sunsetter lxi gauges to register swapped mdc box still nothing checked lanyard no joy does anyone know where to get wiring diagram for connections from mdc to trace back wires or any other suggestions would be greatly appreciated

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i have the same problem and it seems to just be a s***ty connection between the instrument cluster and the harness that goes into the box. it works if i hold it, but i haven't forked over the cash to get it professionally fixed because i don't want to try it myself and screw something up.

hope this helps.

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Take a look here - MDC Troubleshooting Guide

Dan had an issue with one of the inline fuses in the red or purple wire going in. Make sure you have 12V on red all the time & 12V on the purple when the ignition is on.

Not sure which one runs thru the lanyard.

Also check your ground for a good connection to the ground bar under the dash.

Good luck & let us know what you find.

Edited by wienrdog
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