well let me move this thread here since i’m new. maybe someone can help. 05 with low hours, low miles, babied most it’s life,lost AWD, everything else works fine speedo etc. 4×4 switch seems to work,seems to get power to front differential, 12 volts on grey wire to front diff. not sure how to check ground wire. can’t imagine front diff. going bad all ready. fix it or scrap it? Would i tear anything up if i were to run a fused wire from battery straight to front differential to test it?