Transfer case wiring diagrams please?

It sounds like you have a selector switch that is shorted and needs to be replaced. HEre are some wiring diagrams and guides to help us do some testing. You should test the fuses and relays to be safe.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

and

https://www.2carpros.com/articles/how-to-check-wiring

and

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Here are the diagrams (below)

Please let us know.

Cheers, Ken