Chevrolet Pickup C1500 (1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999): 5.7l (vin r), instrument cluster circuit wiring diagram. Instrument Cluster Wiring Always disconnect the vehicle battery before wiring any gauge. Connect a fused & keyed +12V power source to the Pink wire of the gauge wire harness. We recommend using a dedicated power source (i.e. separate fuse on fuse panel) to avoid possible problems caused by bad "noisy" power.
1988 - 1998 (GMT400) - Instrument cluster wiring help - Hello folks, I recently bought a 1990 chevy truck, runs great for its age and she's the first thing I've had with fresh paint, but the whole gauge cluster is crap. I couldn't find anywhere online that sold a new factory replacement, so I bit the bullet and.. 1988-98 GM C&K SERIES WIRING SCHEMATIC - Free download as PDF File (.pdf) or read online for free.