I have a 03 z with the apexi elcetronic gauges installed. They all of the sudden do not work anymore. boost, egt, oil pressure, and fuel pressure. For some reason the lights for warning seem to come on and the backlighting work but not the needles on the gauges. Anyone have any insight into this issue ?

 

Are they all hooked to a common ground? I would start there, then check fuses. I have my Defis hooked up to the parking light circuit and it would blow the fuse occasionally until I went from a 10amp to a 15amp.

 

I'll double check the ground and see if there is any fuses blown. Thanks