kent robertson said: (quoted from post at 09:00:33 10/27/09) I have a jd 4010 that has a dead short with the brown wire coming from the circuit breaker to the solenoid. with it unhooked tractor starts and runs,but does not charge batteries. according to the diagram the brown wire is from the grd term of the regulator and runs to the ign. switch and the solenoid. I'm a car mechanic, and this 24 volt system baffles me. (batts. are in series) any help would be appreciated.
Of course it's going to short,arc and blow fire when you connect that brown to chassis. That brown wire at the starter/regulator has 12V+ to chassis.
The only place another totally, completely and independent wire which also happens to be brown. It's at the batteries to tie the mid point to chassis.
The entire 24V system floats totally and completely 100% free from tractor chassis. The generator, regulator and starter do not need or use any reference to chassis. They would function normally if bolted to a wooden plank.
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