While I was out wheeling last week in Utah, my center differential at one point would not unlock. Truck is a 93 with pin 7 mod, part time kit and high range gears. I first tested the switch, relay module and the diff lock motor and they all tested good. So what I found was a broken wire between the diff lock motor and the relay module which is circled in the print. So before I start tearing stuff apart has anyone seen this before and if so, where was the wire damaged. The other wires all tested good except the green with black tracer and once I ran a bypass wire the diff lock worked good again but I need a permanent fix now. Thanks for any ideas.
