Dan
Guest
Operators manuals have about best diagrams I've seen from any product or manufacture. You won't get a super good ground for it is grounded threw coils on hydralic stack if machine has the corn head varible. If no corn head varible there would be a set of coils in cab that provide path to ground. That way one of the coils gets currant when switch is rocked the one way and other when switch is rocked the oppisite way. Coil is weak enough that it don't such up a bunch of currant but strong enough to provide good enough ground. If little electric motor is getting sticky it may work when you provide dead ground and maybe won't when getting grounded threw coil. If you have corn varible be sure wire isn't broken at hydralic stack where push on connector is attached. It may look good but wire strands could be broke under insulation. Also the coil gets grounded threw the stud on hydralic stack so remove it and shine up steel surfaces. Good luck