I envision a lighted push button. You turn the key on, and the circuit comes up in the off state, the lighted button is off.
You push the button, once, the light inside the button comes on because it is wired across the relay coil. The other relay contacts do whatever you want them to do.
You push the button again, the light goes off, the relay reverts to the original state, restoring the factory configuration. Your wife gets in, and as long as she doesn't push the button, the truck behaves as it came from the factory.
The circuit I linked is the brain behind the lighted button. It up to you to figure out what to do with the relay contacts. You can get a 4PDT relay to be able to switch lots of stuff.