by Steven Gussey
First, I bought a waterproof hourmeter from JCWhitney that will operate on anything from 4 to 40 volts DC. Other hourmeters need more than 6 volts. For the power wire on the hour meter, run a wire from either ammeter terminal. If your tractor is positive ground, run this wire to the (-) negative side of the meter. If your tractor is negative ground, run this wire to the (+) positive side of the meter.
Please note, these instructions are for a MAGNETO equipped tractor. If you have a distributor, read the paragraph at the bottom of the page. Really simple: look at the diagram on your right. One wire goes from the switch to a ground, one goes to the negative terminal on the hour meter, and the last one goes to the grounding terminal on the magneto. When you flip the switch it ungrounds the magneto and grounds the hourmeter, allowing the tractor and hourmeter to both run. Below is a picture of where I mounted the meter on my H.
I mounted
the meter under the rear gas tank support so it is out of the weather a
little more. It is supposed to be water proof, but I didn't want to find
out the hard way. Also, down there no one can see it unless they look for
it.
INSTRUCTIONS FOR DISTRIBUTOR EQUIPPED
TRACTORS: For the power wire on the hour meter, run a wire from either ammeter terminal. If your tractor is positive ground, run this wire to the (-) negative side of the meter. If your tractor is negative ground, run this wire to the (+) positive side of the meter.
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