Alternator conversion

tractordanp · Mar 24, 2015

I just picked up a farmall 200 that I want to switch to 12 volt with a alternator can someone give me an easy way to wire it up without big changes
I did my 560 diesel a while ago with a single wire alternator and I was told to hook both f and a wires to post on alternator and hook all wires to regulator together and that works great I just not sure with gas job if all would be the same?
I do have a 3 wire alternator on my parts shelf that worked but I have no clue on how to wire that on
Thanks dan

Janicholson · Mar 24, 2015

The 3 wire is easy. You will need a trailer marker light (or a dode, or a 10 ohm 10 watt resistor) and some 14 gauge wire and maybe some 10 gauge wire. The Battery (stud) on the Delco goes to the wire that was connected to the Bat terminal on the regulator. (a terminal end and a piece of 10 gauge wire to connect might be used). the #2 terminal also connects to the Big Bat stud on the Delco. The #1 terminal connects to one terminal on the marker light bulb, the other marker light terminal connects to the ignition switch side of a ballast resistor (if using the 6v coil) and the bulb is the idiot light as in a car. The coil should have its wires reversed Negative to the distributor) and the amp gauge swapped wies side to side. (shows charge correctly) Bulbs need to be changed to 12V. If using a resistor in place of the marker bulb, no difference, if using a Diode, the marked end of the diode goes toward the alt. Jim

Alternator conversion

tractordanp

Member

Janicholson

Well-known Member

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