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Ford Tractors Discussion Forum

Re: Five position light switch

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Sean in PA

11-06-2019 14:22:00

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According to the wiring diagram for the A and B prefix thousand series (unfortunately the terminals aren't numbered), one terminal has a brown wire coming from the hot terminal of the key switch through a 5 amp in-line fuse so it is hot all of the time, and that terminal has a second brown wire that goes to the rear implement light, which has its own switch in the lamp housing. Going clockwise from there (in the schematic at least):

Next terminal has a red wire with a white stripe going to instrument panel illumination bulbs, and if it has an S-O-S transmission it also has a red wire going to the speed selector illumination bulb.

Next terminal has a blue wire with a white stripe going to the high beam side of the headlights.
Next terminal has a blue wire with a red stripe going to the low beam side of the headlights.
Last terminal has a red wire that goes to the tail and side marker lights.

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11-06-2019 17:11:33

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 Re: Five position light switch in reply to Sean in PA, 11-06-2019 14:22:00  
I don't think it's safe to say that going clockwise in the schematic is comparable to going clockwise on the key switch. Hopefully someone will come up with something from an owner's manual that will confirm.

The switch appears to be original, and it has terminals numbered 1-7. I wish they would have linked that in the service manual.

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