I am trying to find the correct starter solenoid for my 2000 4 cylinder. I have ordered two so far that have been the wrong ones. Just went to local CarQuest and got another wrong one. The part number I am finding on the New Holland parts site is 311006 for 12V and 311007 for 6V. The parts guy at CarQuest said the one he sold me crossed out to 311006 but it appears to be grounded to the base rather than isolated ground. May return it in the morning and make a trip to the nearest NAPA and try again. Does Anyone have the NAPA # for the correct solenoid? My tractor is converted to 12V but starting system is still as it should be with the start button by the shift that acts as a safety for not starting in gear.