X540 Nightmare, Help!!

[sd455dan]

Glad replacement of the harness fixed it. There was an open in the circuits path somewhere and agree with K7LN probably a failure at a crimp.

 

[two_bit_score]

Well guys, the tractor and deck are running. After all the tests, I decided to look at a new wiring loom. Much to my surprise there was a used one on E-Bay that came off a running X540.
I just got it swapped out, and low and behold, it fired right up and the deck runs. I used my old electronic module on it, which I didn't think was bad but couldn't think of anything else. There must be a broken wire somewhere in that old loom.
I'm a happy camper and I thank you all for your help!!
Irv

Glad to hear that worked out for you.