Where is the light switch on a 42 GPW?

[Ron Pier]

It sounds like your Jeep might have been modified? A 42 Jeep doesn't have an ignition key. It has a toggle switch. The key was omitted after the keys for the earlier Jeeps were repeatedly being lost or taken away from the vehicle by GI's and Squaddies.
The light switch is the strange knob affair just above the indicator switch (with red light) in my Jeep. It's designed so that you can't accidentally put the headlamps on in a blackout situation. Ron