Wire diagram--lighting circuit
 

Hooking up some gauges(98 VETTE) in a piller pod and having trouble idintifying the correct color wire to hook into my dash lighting circuit. Tested some color wires, but no go. Only thing i found out so far is red and orange are always hot. I am turning on my parking lights and testing. Would this be the correct way ??? A wiring diagram would sure help. THIS PROJECT IN HARD ON MY BACK...

I am not familiar with the '98's but that orange wire sounds like the one. Try going to your radio wiring harness and look for an orange wire there.

Here's another idea - find an aftermarket radio wiring schematic for your car, it will identify the dash light (dimmer controlled) circuit for you. The aftermarket radios usually tie in an orange wire to the dash light circuit, that is why I keep hitting on orange.