The good news: - I had a chance to test the front and rear ARB lockers at the Oregon Trail Jamboree 8/3 and 8/4. This was a series of all day runs put on by a jeep club but other makes and small SUV's were welcome. The first day was a class 3 - 5 warmup run. I got to test the lockers in a few sections then the trail guides had me do a 'stunt' with the lockers that really opened my eyes as to the potenial of using both lockers. I won't describe it but hope someone sends me a picture of it (which I will post.). At the end of the day I considered the lockers as one of the best investments I have made. Using is rear locker is nice, using both rear and front is amazing..
The bad news: - At the start off the second days run, I switched on the compresser and pressed the switch for the rear locker. Nothing. Using ARB's controls, the front locker will not work if the rear locker is not working. (Warmonger - this is your cue to post the reliability of your all pneumatic setup.) This day's run was a class 6 down an old mining trail. I could have really used the lockers but made it pretty well without them. Only needed a short tow in one place.
I will take the X to the ARB installers shop Monday to find out what happened.
Monday: The problem was the rear locker switch or more correctly the switch face plate. The face plate has a plastic 'finger' sticking out the back that operates the switch and the 'finger' broke off. It looks fairly fragile. You can pull the face plate off and work the switch with a small screwdrive or other match stick sized implement.