Posted by Steve@Advance on June 26, 2016 at 19:27:11 from (107.203.134.67):
In Reply to: Farmall H tractor posted by howard parker on June 26, 2016 at 18:58:41:
Search "Farmall H wiring" under images.
Make sure you are looking at he right diagram. The picture explains much better than words!
You state it has a coil, so I'm assuming it has battery ignition. If by chance it is a magneto, the kill wire goes to ground to kill the engine. Nothing about a magneto ever connects to the battery!!!
The polarity of the coil depends on the battery polarity. If it still has a generator, it probably is positive ground. If it is positive ground, the - terminal of the coil connects to the ignition switch. If negative ground, the + terminal of the coil connects to the ignition switch.
If it has been converted to an alternator, it will be negative ground and will need to remain negative ground.
The best way I know to determine the polarity of the amp meter is to watch the needle, see which way it swings. Turn on the ignition, lights, with the engine off, should show discharge. If backward, reverse the leads.
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