Originally Posted by jeepwayoflife
Sorry, thays what I was trying to say. The 4 wheels are locked together, always on, not like lockers.
"full-time" means you can use it all the time...dry roads, icey roads, gravel roads, all conditions.
part-time means you only get to use it sometimes....where you need slipping to occur between the front and rear axles...like gravel roads. You can't use it on dry high traction roads...hence it can only be used "part-time".
there's a big technical difference between the two, since both are mechanically different in the transfer case. In the context of the dash, the full-time t-case was the NP242. TJ's never got the NP242, but XJ's did. and since they both used the same dash, you got a non-functional idiot light.