I’m getting a rear Lokka installed in my’02 UZJ100 and am having some difficulties. The unit was in ther previously and worked flawlessly but was taken out due to a misunderstanding with the shop, upon taking it to another shop after install they tell me the vehicle won’t move unless the center diff is locked. This makes no sense to me, any help would be appreciated. The other issue I’m having is that the ATRAC stopped working and my traction control lights are on all the time, the shop claims it’s because the bulb is burned out for the”D” when you shift into drive. Does this make sense or is it more likely a wheel sensor?