WD 9.... 6 or 12 volt

plow hand · Nov 17, 2009

I just bought a wd 9..McCormick-Deering.I have to go buy a battery,trying to determine if it is a 6 or 12volt I took one of the bulbs out and is # w 1143 any help would be great...

Bob · Nov 17, 2009

An 1143 is a 12 Volt (nominal) lamp, for whatever that's worth!

tackhammertime · Nov 17, 2009

1143 is the bulbs used in our travel trailer lights. 12 volt

D Slater · Nov 17, 2009

With a starting and lighting system it probably was 12 volt from two 6 volt bat. Common to find them replaced with one 12 volt battery.

rustred · Nov 17, 2009

they came out with 12volt, 2 6 volt batts. in series. plus they have 2 batt. boxes.

plow hand · Nov 17, 2009

Being 12v it would be a neg. ground set up??? positive hooked to starter right? thanks..

Janicholson · Nov 18, 2009

I believe they were positive ground. It will likely work either way. I would hook up the battery with the polarity determined by the size that the terminal clamps are being used now. Big post in big clamp etc. Then, without starting it, I would turn on the lights. If the Amp meter moves to discharge I would go with it as is. If the meter moved to charge (the wrong way) I would reverse the polarity of the batteries, and run it that way. Again do not start the tractor for this test! JimN

WD 9.... 6 or 12 volt

plow hand

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Bob

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tackhammertime

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D Slater

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rustred

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plow hand

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Janicholson

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