Originally Posted by Silver02Taco
1.) Check the integrity of the connections on the wire you attached to the grey wire coming out of the plug that goes into the computer. They must be good and snug.
From looking at that 1st pic, it looks like you need to redo the end with the wire loom on it.
2. It's possible that the bracket that you attached the wire to isn't a true ground. When I did mine, there was a bracket welded to the body just to the left of the 4WD Computer that has a bunch of holes pre-drilled into it. I attached my ground wire to that bracket and it worked the 1st time I tried it, and every time since!
I hope that helps!
I actually did redo that connection this morning when I was still tinkering with it because it came out when I plugged the connector back in. I took it out and did turns in dirt etc and the locker never engaged. I then tried in 4lo just to see if it would. It never did. And to be honest I'm not sure if I ever had it engaged before and I know the previous owner never wheeled. I found this
that I am going to look into next.