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Re: Positive/Negative Ground

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danb4230hc

03-10-2008 17:05:04

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Chnaging from + to - ground is pretty straight forward. If you stay with a generator you will need a neg. ground regulator. If you change to an alternator I would suggest a Delco 10SI or a Delco one wire altenator. These have an internal regulator, therefor no external regulator is needed simplifying your wiring. If your tractor is a gas burner you will need to change the primary wires on the coil so the + terminal goes to the key switch, and the - terminal goes to your distributor points. Probably the biggest challenge will be to get the fuel gauge to work. On the 10 series tractors I've have luck with just swapping the leads around on the fuel gauge. The starter motor doesn't care what polarity you send to it, and neither do the lights care what the polarity is. The reason I like a Delco 10SI is so you can connect the #1 terminal of the alternator to the "GEN" light on the dash. When you turn the key on the "GEN " light will come on, then go off once the tractor starts and the alternator begins to charge. If the alternator isn't charging the light will stay on. The #1 terminal on a Delco 10SI basically "excites" the alternator when you first start the tractor. Hope I haven't forgotten anything since it's been a few years since my last conversion.

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