I am currently in the middle of doing an LT1 swap and bought a dash cluster and dash harness from a 90-92 Trans am or Formula (it has the 140 speedo in it) to get the electric speedo and the idiots cut a few of the plugs off but I think they goto the radio. Does anyone have a wiring diagram for these year cars? This is basically all I lack to get everything running.

Thanks for any help.