The tractor dash lights up, thats it. No cranking, no clicking like a bad starter.
This is an "L" series yes?
If the starter will not make a sound - then it has to be one of two places, battery voltage or wiring to and from. That could be a fuse, or a bad ground too, or could be a mouse chewed through a wire and then a small bump set the wire off, or grounded it. On my BX the switch kills the engine, on the B7100 the switch starts it only. On your machine is the fuel injector pump activated by an electrical means or mechanical one? Again the BX uses an electrical and the B uses a mechanical one. I would test for voltage throughout the entire system and start with battery then grounds, then fuses, then wires, then .....
I had just picked up a load of dirt and was moving up a small incline when it just quit.Was there a bump - or smooth movement when it quit? Reason I ask - that bump could be the jarring of a wire somewhere.
Would a gas line issue make it stop dead in it's tracks?
The fuel line could, but if you are bleeding up to the injectors......that should be fine, when you bled the line, did you bleed to the injectors? or just to the pump? Could be the pump quit - then again it should still turn over.
The couple times I've ran out of gas it sputtered a bit.
The safety switches were disconnected years ago. Before it started raining the starter relay fuse was all I was able to check. Are there other fuses to check?
Based on what you have said - it sounds electrical - due to the fact that is has killed the starting side of the machine. I would run fuses through a multimeter first and look for a "main" fuse somewhere.