Gauge gremlins

cmelt2003

Need some help. Had some work done on the engine this spring, and now my gauges are acting wonky. My tach does not work at all, my depth gauge is all over the place, my fuel gauge jumps all around, and voltage doesn’t work. Speedo, trim, oil pressure and temp gauges work.
It’s a 99 270 with 5.7 EFI. What could be wrong? They all worked last year.

Ian

Look for loose connections on the engine, in particular a ground.