Lack of install manual and I can figure this out. Having the lock out hooked up correctly and yet not understanding my gear vendors was not shifting into overdrive because of the 4 wheel lock stays triggered and 4wd switch was to touchy and triggering when left in 2wd position intermittently. Next unhooking 4wd lockout gv vendors works great, months pass, 4wd lockout is forgot about. Winter arrives and hubs are locked in. Nice leisure drive home on patchy icy roads, the subconscious habit kicks in of engaging double overdrive, violent tire hop, tire chirp, violent tire hop, tire chirp, hop tire chirp, panic freeze up grip wheel push in clutch hop boom,
.
quickly examine damage, put transfer case in 2wd limp one mile home.
New, ring and pinion, front end yoke, front driveshaft, front transfer case yoke, might as well install new u joint in axle shafts, spindle seals and bearings. Hook 4x4 lock up wire back to switch on transfer case, Shim out 4wd switch so it stays open in 2wd. Test lock out function repeatedly with hubs locked out front drive shaft removed and then driveshaft installed hubs locked out.
Preach the 4x4 lock out on any gear vendors thread I see.