i have a 1986 trans-am with factory digital guages and recently i was trying to fix where it has the miles per hour and reset funtions well u couldnt see all of the nubers to see how many miles the car has well i took the whole cluster out and then the screen on it went black and no numbers appeared and i couldnt change the mph to kilometers and the info dispalys keeps marking pontiac system ok and its not cause it gots a coolant problem what will i need to fix this problem i think i need a new info cluster from another digital guage well if anyone knows a bout this share the knowledge