I am the one that posted about this problem I had. THe fault was the switch relay (solenoid) inside the console door in cab. Got by with running a jumper wire from two outside (main)post together. When this switch relay goes out you have nothing in the cab tach, oil press,voltage meter,lights, all switches do not work BUT combine will run...A new one that I have on my bench is $67 when I am done I will install it. P.S. You will need to disconnect this jumper wire when combine is off or gauges and switch will stay energized. use a n10 wire.......