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1947 Farmall A electrical issues

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Ted

07-19-2004 07:38:28

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On my 1947 Farmall A, I am experiencing a drain of 0.3 volts when I test between the positive terminal and the positive ground ground wire (when the cable is un-hooked and the voltage regulator wires are also un-hooked).

When the voltage regulator is connected, I show a full 8.3 volts drain between the same battery post and the cable (I installed an 8v battery). (lights off, etc).

I have replaced ALL the wiring since, and no solution. When I connect the battery cable to the battery, the switch area starts to smoke.

SO now I'm trying to trouble shoot the problem. 1) Does anyone have a wiring diagram for the light switch so I can test that with my multi-tester?

2) Could I have mutliple problems (also regulator issues or generator issues)?

Any help would be appreciated.

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Pete

07-19-2004 15:01:16

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Re: 1947 Farmall A electrical issues in reply to Ted, 07-19-2004 07:38:28

More than one problem is a real posibility Unhook every thing and reconect each item one at a time checking for problems each step of the way.

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David in UT

07-19-2004 12:56:28

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Re: 1947 Farmall A electrical issues in reply to Ted, 07-19-2004 07:38:28

Ted,

Hmmmm...sure sounds like you've got a short-to-ground in there somewhere...can you trace the burned wire to its source?

It's the light switch you're working on right (not the ignition switch)? When I did my C, I had to figure that out too -- I did it by using the continuity tester on my multimeter. By testing different pairs of connectors, I was able to figure out which one was what...but I sure can't remember now ;-). I've got a diagram at home I think -- when I get in tonight, I'll look it up for you.

- David

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