Originally Posted by frank_ster
you can just put a switch ..
auto. stock computer controled
open. 45/ 55
lock. 100/100 up to maximum torque of the transfer clutch.
to do this option one could do it for 3.50$
Only issue being the potential for the CEL to get thrown, which could in turn be resolved with a resistor.
Could connect it to a momentary switch as well (for lock on launches and in certain snow conditions... though it probably does this already at least for launches).