98 24v Cummins 3500 running fine. turned it off for a minute and tried to restart- dash lights came on but no response from starter. Batteries ok, relays checked ok, fuses ok, removed starter and tested ok, noticed airbag light on and power windows don't work or A/c blower motor. Ran jumper wire to start solenoid to a push button and back to battery and it started using the jumper but still can't get the key switch to work. replaced key start switch and still nothing????