I've had the system tested, the alternator charges the battery just fine, the alternator was bench tested at napa where I bought it. Tested 'good'. Replaced the plug from the harness to the alt.
My voltage gauge still goes crazy causing all my lights to dim. Only my sound system (radio 2 amps) is unaffected. Likely because it's on its own circuit.
I can't see any short or corroded connections on the harness, the battery holds a charge perfectly, starts with no hesitation etc.
What makes this problem better or worse?
Slows down when brakes are heavily applied, high drain somewhat effects gauge.
How long has your 1997 Chevrolet C1500 had this problem?
RepairPal Certified shops can diagnose and repair your 1997 Chevrolet C1500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Insufficient ground circuit - only through **hands-on** testing by qualified personnel can that particular circuit be discovered.
There is no protocol for this type of problem .. No one can advise exactly where the actual problem is - with any amount of certainty.
Wiring schematic will be required along with advanced automobile repair skills.
Good luck with it!
