Re: 6V or 12V?

Posted by Bob M on November 11, 2000 at 17:03:52 from (172.158.139.103):

In Reply to: 6V or 12V? posted by Clarence on November 10, 2000 at 17:59:11:

Clarence - Here's a couple quick tests you can run:

1 - To determine ground polarity: Put a battery in the box - can be either 6 or 12 volt. Connect the GROUNDED battery cable to the neg battery post, and the other battery cable to the positive post. Now watch the ammeter while you turn on the ignition switch or headlights. If the ammeter deflects to the left (minus), the ammeter (and most likely the rest of the electrical system) have been set up for negative ground. If the ammeter deflects the right (+) the tractor's probably still positive ground.

2 - To determine voltage: Take a voltmeter and connect one lead to the battery side of the starter switch, and connect the other lead to the tractor frame. Put in a 12 volt battery (or use jumper cables) to start the engine. Run the engine up to 1/2 RPM or so then remove the battery ground (or one of the jumper cables). If the generator, etc. is good, the motor will continue to run without the battery. Now look at the voltmeter - if it reads 7 - 10 volts, you've got a 6 volt system. If it reads 14 - 18+ volts, it's been converted to 12 volts.

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