Broke key off in ignition on my G4200. Took ignition out and to a lock smith. He removed broken key and made new one. Installed ignition back into tractor. Now no temp gauge, glow plugs and no oil light. Tractor cranks and runs. Pulled battery from my G5200 and removed ignition switch from dash only to compare wiring connections. I DID NOT remove any wires from switch. put ignition switch back in dash. Now no glow plugs or oil light. Didn't run tractor enough to check temp. I am lost as to what happened to G5200 and G4200. Your suggestions will be appreciated.