1948 John Deere

plaese help

Thank you frank

thanks again frank

Frank, use this diagram for your magneto equipped B. You will have to remove the wires from the "L" & "BAT" terminals on the existing regulator & then hook to the big "BAT" terminal on the back of the alternator (note: you might have to lengthen them). You will have to add a switch at the dash area & a wire with a resistor to turn the power on & off to the regulator #1 terminal in the alternator (this is necessary because the mag equipped B doesn't have an ignition switch that applies power anywhere) "Note: if you want automatic charging you can replace the off/on switch with an oil pressure controlled 2 terminal n/o pressure switch in a T that attaches to the block where the oil pressure line attaches now". You will also have to run a jumper from the #2 terminal of the alternator to the big "BAT" terminal on the back of the alternator. The alternator will work without the resistor in the wire to the #1 terminal but the internal components life will be shorter without it.

Frank, use this diagram as a start. Remove the wire going to the BAT terminal on the old regulator & lengthen it & hook it to the big BAT terminal on the alternator. You will also have to remove the black wire going to the "L" terminal on the old regulator & lenghten it & hook it to the BAT terminal of the alternator or you won't have lights (note: disreguard the light wire running from the ammeter to the light S/W on this diagram as it is for a different tractor. You will have to run a new wire from the ignition S/W (put the diode & resistor in this wire) to the #1 terminal of the alternator. The diode & resistor can be bought from "radio shack" or an electronics store. The ballast resistor can be bought from an auto parts store. Study this diagram & E-Mail me or John T with questions & either John T or I will reply. If you aren't sure about anything just ask.