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Allis Chalmers Discussion Forum

Wiring connections on CA Allis

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02-25-2008 15:46:19

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Sorry to keep bothering you, but I have more questions! Field wire on generator on letter R on light switch, right? I do not have a small wire from starter. It is a heavy black wire. If I pull light switch half way out it charges good, about 10 AMPS. But if you haave the fuse in, it discharges all the way over. Nothing goes on the bottom of light switch, right? When I took it apart, there was a wire on there , but I don't know where it went. Have I got something mixed up or is light switch bad? Thanks Again!

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Steve in N.J.

03-01-2008 19:15:46

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 Re: Wiring connections on CA Allis in reply to DCPULLER, 02-25-2008 15:46:19  
If you look close at the three position switch, it has letter codes on it. "H", "S" & "R". The lighting terminal used on the light switch is the letter "S" screw. Your Headlights and tailight share this screw for lighting.

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02-25-2008 19:08:14

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 Re: Wiring connections on CA Allis in reply to DCPULLER, 02-25-2008 15:46:19  
i cant give you the letters on the switch, but you have a power wire from the ampmeter that goes to the resistor. next you have a charge wire from the generator "F" terminal that goes to the resistor. the other side of the resistor is grounded to the case. third, you have one terminal that the light wire connects to. fourth, there is a blank terminal as you said. if you take the fuse out, you are disconnecting the POWER wire from the amp meter. that has nothing to do with the charge. you might have the wires mixed up.

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02-25-2008 19:07:58

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 Re: Wiring connections on CA Allis in reply to DCPULLER, 02-25-2008 15:46:19  
wire from - side of amp meter goes to term B (fuse) at bottom of switch, term S feeds the lights. large wire 10 ga from starter to + side of amp meter. Bob

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