DK55C 2008 instrument lights staying on.

[daler]

My 2008 DK55 instrument lights stay on after turning the tractor off except the glow plug light and I can't turn engine off with key, I can only start it. I changed the ignition switch and it continues to do the same thing. This happened after a full day of blowing snow when I brought it in to rest. For now I disconnect the negative on the battery so I don't kill the battery and burn the instrument lights. I use the kill button to stop the engine. Any help would be appreciated. Thanks

 

[ritcheyvs]

Assuming your schematic is similar to a DK50C (http://pt709.synology.me/DK50C.xps), all power for the instruments goes through the key switch. As a diagnostic, that happens to those instrument lights if you unplug the key switch? If unplugging the switch makes the lights go out, the switch is bad. If not, you have a problem (shorts) somewhere in the wiring harness or fuse panel. Such a short is a pain to find but you may be able to find it by wiggling wires, working back from the switch, until you find a place where wiggling makes those lights go out. I'd check the key switch or the fuse panel first because you's need multiple shorts in the wires to create this problem.

 

[daler]

Thanks for you help Scott. I replaced the switch but had done that when the battery was disconnected. Tomorrow I will connect the battery and unplug the switch and see what happens. If it is not the switch I was going to take the dash apart and follow each wire and see what happens. I guess I will start at the fuse box first which is under the floor and something could have got wet as I was blowing snow all day when it happened. Thanks a bunch, I will let you know if I find the problem. Cheers Dale

Assuming your schematic is similar to a DK50C (http://pt709.synology.me/DK50C.xps), all power for the instruments goes through the key switch. As a diagnostic, that happens to those instrument lights if you unplug the key switch? If unplugging the switch makes the lights go out, the switch is bad. If not, you have a problem (shorts) somewhere in the wiring harness or fuse panel. Such a short is a pain to find but you may be able to find it by wiggling wires, working back from the switch, until you find a place where wiggling makes those lights go out. I'd check the key switch or the fuse panel first because you's need multiple shorts in the wires to create this problem.