hangon
New member
I need to figure out what alternator goes on my 4020 john deere . I talked to the local dealer and they gave me a part number for a 35 amp 24 volt alternator but I checked and the tractor has a 6 volt battery on the right side and a 12 volt battery on the left side. I belive the tractor is a 1971 model , diesel , there were two wires going to the alternator.