Hello everyone: I've got a 67 fastback with a 289 4bbl and 4speed toploader. I've got a tribute tachometer in place of the am/temp guage that was working at one point along will all other electronics. One day the tach quit along with the turn signals, fuel gauge, temp gauge, heater fan and radio. The car runs perfect and starts great. Please help!! I'd like to fix this myself as electric diagnostics costs an arm/leg!! Thank you all for any help on this.