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According to Manual S-119C, the 5 position switch is wired as follows: The wire that connects to the top of the curved piece goes to the voltage regulator terminal marked with an "L". This is the terminal closest to the pulley, or the front of the tractor. The left side of the colied wire is hooked to the fuse holder and the right side is hooked to the dash light. The coiled wire is a resistor that is activated when you switch the lights from bright to dim. Minneapolis Moline marketed this feature as split beam headlights, but in reality, they added this resistor to reduce the voltage to the headlights. The wire that hooks to the terminal to the left of the curved piece goes to the positive side of the coil. (Assuming you have a positive ground system. If you converted this to negative ground, this wire would go to the negative post on the coil. The other wire coming out of the fuse holder goes to the headlights. This wire should have an in-line disconnect. The right side of the ammeter gauge goes to the starter selenoid and is hooked to the same post as the battery cable. The top terminal of the selenoid goes to the left side of the starter button. The right side of the starter button also hooks to the right side of the ammeter gauge. The left side of the ammeter gauge goes to the middle terminal of the voltage regulator. I have a wiring diagram that I send you a copy of.
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