Yesterday I was working in my Disco 1994 3.9L It has several electrical problems, and the transfer solenoid was not releasing the transfer when the gearbox was in N. I found the problem, and after I fixed the wire, the solenoid started working normally, but the lever can be shifted only betwen Low, N, and High. I can not shift the lever to Diff Lock neither in High, low, or N.

Anyone here with a similar experience/problem?

Thanks for your help!.

 

You may find that the linkage is bound up, happens quite often when not shifted much. Might want to go under the truck and clean and lube the linkage.
Mike