Posted by Bucky on October 23, 2008 at 17:54:57 from (208.74.247.253):
I have a 1953 Farmall Super M. The lights did not dim. I noticed the resistor on the switch was burned. I bought a used switch at a salvage yard. This new switch has FOUR positions, rather than the THREE on the original switch. I am assuming that I will have OFF LOW MED HIGH on this one. That"s fine. This new one also has a built in fuse on the back of it. It looks identical on the front (knob) to the one that I am replacing, so it is from some sort of Farmall.
I think the reason the original one burned out is because it was wired wrong. All the wiring on this tractor was in very poor condition and covered with tape and bad connections. I have rewired the whole thing. The only problem is what terminals to connect the wires on that light switch. There are seven screws, (not including the grounds). Most have no numbers on them. But there is a #1 #2 and #3. The #1 goes to the fuse, so I assume that would be the input from the battery. The #3 goes to one end of the resistor. The #2 has 2 screws with a jumper in between. Would that be the one that goes to the lights? Or would the fuse be on the light wiring end?
Does anyone have a schematic for the lights? What might this 4 position switch come from?
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