A friend has a '59 or 60 IH 560 Gas Burner. He is trying to rewire it as the wiring was broken and missing. The ammeter had a wire on on the in and out sides, he doesnt know where they go. Secondly, There is a resistor to knock it down 6 volts that is not hooked yp and he doesnt know if this is needed. Any help would be appreciated. Also if anyone knows where I can find a schematic for the same tractor on line, that would be great. Thank you and Merry Christmas.