I have a 2002 Silverado that's strictly offroad. All Pro Comp gauges except for the speedo. I want to keep just the speedo and wire it back up but I took the dash apart and it seems that the back of the speedo has 4 poles. Signal, Ign Power, Ground, and lighting???? The circut board surrounding says 1,2,3,4. Anyone know which is which? Or does anyone have a wiring diagram for the dash for a 00-02 Silverado, Yukon, GMC dash so I can trace the pinouts?

 

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