Hi Howell.

I think you need to add the electric_always_available=1 line to the aircraft.cfg under [electrical]. Like this:

[electrical]
electric_always_available=1
max_battery_voltage = 24.0
generator_alternator_voltage = 30.0
max_generator_alternator_amps = 400.0

Make sure to back up the original aircraft.cfg first

Hope this helps.

Mark