Not to worry about causing permanent damage by running with the battery polarity reversed. Those old generator systems pretty much could care less about ground polarity.
Suggest you do this (assumes your H still has the original generator - not a 12 volt alternator conversion):
1 - Hook the battery cables up so the POSITIVE post is grounded.
2 - Now turn on the lights and note which way the ammeter needle swings.
3 - If it swings left (discharge) skip to step 5.
4 - If the ammeter swings right (charge), REVERSE the cable connections at the battery.
5 - Polarize the generator: With the engine stopped, momentarily jumper between the BAT and GEN terminals at the voltage regulator. (Soon as you make contact - you may see a small spark - you have successfully polarized the generator)
Your tractor is now set to run positive ground - like it did from the factory.
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Today's Featured Article - Upgrading an Oliver Super 55 Electrical System - by Dennis Hawkins. My old Oliver Super 55 has been just sitting and rusting for several years now. I really hate to see a good tractor being treated that way, but not being able to start it without a 30 minute point filing ritual every time contributed to its demise. If it would just start when I turn the key, then I would use it more often. In addition to a bad case of old age, most of the tractor's original electrical system was simply too unreliable to keep. The main focus of this page is to show how I upgr
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