Please forgive the ameteur question but all of my other 4x4 trucks were the same: 2H 4H N 4L or close to it. This new 77 Jimmy (350, automatic) of mine has Warn locking hubs that somebody put in, but the transfer case shift is marked: L-LOC L N H H-LOC or something like that. Since it isnt full time anymore - what position is 2 high? 4 high? 4 low? what is all this "LOC" stuff?