I have fitted a manual lever to engage the CDL, but as it is not actuated, I have to lie on the ground and reach into the Transfer Case to engage it. Burnt my blooday arm on the exhaust too dammit. This CDL does not appear to be a true centre locking differential. Living in NZ we smash the Mud Tracks a lot, and the CDL is not as effective as the Traction Control. What I mean by True CDL is, all wheels should move at the same speed regardless of how much traction they have. I can still however be on a major incline and have two wheels spinning and two not doing anything, with TCL though, The Disco climbs really well.