Having a run on this type of question.
Have managed to get my ARBs temporarily connected up in my face lift XJ to test after a long time of disuse (they were on the car outside with no air lines connected for some considerable time)
Anyway,
activated the lockers and hey presto thankfully my front and rear axles locked when we turned one wheel the other turned, fantastic !
I have now disconnected the compressor from the supply and went for a little impromtu test blast around the industrial estate
and noticed both rear wheels spun together, due to two black stipes on the road, so back on the ramps and it would appear the rear axle is locked as you cannot turn one wheel without the other turning no matter how hard you try to resist by hand and the front is ok as you can hold one wheel and turn the other, but out on the road when turning full lock the tyre isnt jumping as you would expect for a locked axle?
Is this right or does my locker need some attention?