Key switch problems

[Lightning2750]

New key switch in my 1993 l2350, the key is in the off position, but the glow plugs stay on ,, please help!!

 

[Motion]

What problem caused you to change the switch? Is the new switch OEM? Check the condition of the wiring. Does the new switch have individual terminals or is it a plug, if individual confirm they're correctly landed, review your wiring diagram. I'd suggest disconnecting the glow plugs and putting a test light until you correct the issue.

 

[Roadworthy]

Did you use the correct switch for your tractor or are you trying to adapt another switch?

 

[Russell King]

You May have wired the switch incorrectly? Or is it a plug to plug switch wiring?

 

[Dave_eng]

You May have wired the switch incorrectly? Or is it a plug to plug switch wiring?

The WSM shows a switch with a plug so mis-wiring as you suggest is far less likely.

I suggest, as Motion asked in post #2, we need more of the back story.

Dave