Yes just fuse it, 10amp min/15 preferred. Closed circuit = FWD, open = AWD. Just run a harness to the fuse terminal… two male spade crimp connectors in the fuse socket, run wires from them into cabin to a switch with fuse inline.
Bam, insta FWD
I have my DCCD controller wired to cut power and unlock the center diff apon ebrake application so I can flick the car easier.