when putting it in 4wd in my sami, it used to turn the windshield wipers on
the problem was with the ground, under the hood, against the firewall on the drivers side, there are 2 wires going to it i think, the screw was just loose...
probably not your problem, but is having that little 4wd light working worth swapping a harness
, just unplug it at the t-case, thats the only electrical thing happening when putting it in 4wd
Andrew