Posted 2/8/2019 18:47 (#7307252) Subject: Need some insight on 7140 boxcar diff lock
diff lock has not worked on my 7140 since I got it and thought I would check into it today. I need a little more knowledge of how the system works. fuse is good and I have keyed power at the fuse but no power to the switch. I checked at the switch terminals and all positions seem to be functioning correctly just no power to any terminal of the switch. I know the system is tied into the brakes also so if any of you guys could give me a little better explanation of the system I'll have a better idea how to go about trouble shooting it.