My 95 4x4 recently quit working. I haven't been using it and during a recent snow storm I tried it and no luck. My Chiltons book doesn't describe how the system works. What I do know is it worked this summer and hasn't been used since, that when I push the button and the yellow light turns on, the dash 4x4 indicator turns on, and there is a clicking noise in a panel behind the glove box. Where can I find a description of how the system works and any trouble shooting info would be appreciated. Mark Aurora, CO