If nothing that normally only works with the ignition on is working (Allison shift pad not illuminating, dash HVAC fan not working, etc) may be a problem with:
Ignition switch, Ignition solenoid or wiring between them. Check for power on the IN lug of the ignition solenoid and for power on the OUT lug when ignition is on.
Ex: 2003 Alpine 38FDDS. Ex: 1997 Safari Sahara. Ex: 1993 Foretravel U240