I thought of another tidbit on the testing.
The viscous clutch that connects the front and rear drive always has about 5% lockup. Your never truly in 2wd in one. So removing the fuse keeps it from going to full lock but does not give 100% disconnect.
Another thing to check, connect a meter to the viscous clutch energy lead, and watch when it turns on. I think that you'll find that even in 2wd mode (If you have that) it turns on when accelerating and when traction control activates.
This could be a bad thing if you converted it to 2wd and then drove in real icy conditions... It would be a careful experiment to perform. Depending on how the antilock and traction control interface is programmed....
Dave
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If it has a motor its worth playing with.......
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