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Message: <blockquote data-quote="Tractormech" data-source="post: 113764" data-attributes="member: 19296"><p>Is what you're calling the auxiliary solenoid the little short one on the far left sitting in the seat looking down? If so jumping that out makes the machine think the auxiliary hydraulics are applied and the tractor won't turn over. There's a small wiring harness that goes to the solenoids on the injector pump and the (I think) the oil pressure sending unit and maybe the temp sending unit. Jump out the seat belt switch and operator presence switch in the bottom of the seat. Jump the seat switch first and then seat belt. You should hear buzzers when the seat switch is jumped and then jump the seat belt. Turn the key on and get a test light and check the solenoid on top of the pump. You should have voltage. If not wiggle the small harness and see if you hear a click from the solenoid on the injector pump. There's a splice that goes bad in the small harness and sometimes wiggling it will make it make contact. Try that and let us know.</p></blockquote><p></p>