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Canadian Ken 11-04-2012 17:53:29 74.114.77.75 Report to Moderator	Purchased this tractor with alternator -2 wires - Trying to follow wiring diagram for instrument panel - here is what's going on- -former owner had sub wired kill switch since main switch would not work in ignition mode reconnected switch to test -worked, but the battery goes dead -must be internal short in switch -bought new switch -found bare spots on original battery cable that are green and touching steel sheath -have removed and getting new cables -wiring arrived here as follows- 1.- starter wire to resistor -good 2.- other side of resistor - green wire to positive terminal on coil - second wire to fuel gauge 3.- alternator -yellow wire from bolt on alternator to ampmeter -jumper wire from bolt on alternator to spade connector on side of alternator-voltage regulator?-red wire coming off of spade beside jumper wire to battery screw on ignition switch 4.- brown wire from ignition terminal on switch to positive terminal on coil 5.- negative terminal on coil wired to terminal on distributor -no other wire on terminal 6.- The switch I purchased is the same as the one that was on the tractor -there is no MAG terminal for wire from switch to positive terminal on coil -as per what the manual says ---the other wires appear to be as per manual I am figuring the former owner had the tractor set up negative ground --that is how it was when I purchased it - I will keep the alternator for now as the tractor charges good(as per ampmeter) Any help would be appreciated Ken [Reply]   [No Email]
M-MAN 11-04-2012 18:11:28 184.39.144.12 Report to Moderator	Re: John Deere 720 gas wiring help needed in reply to Canadian Ken, 11-04-2012 17:53:29   Ken; Could you please explain what you think is wrong? All I get is there is no MAG terminal on the switch. You don't need one. That terminal is only used on magneto tractors & it is just a ground to kill it. [Reply]  [No Email]
Canadian Ken 11-04-2012 18:18:32 74.114.77.75 Report to Moderator	Re: John Deere 720 gas wiring help needed in reply to M-MAN, 11-04-2012 18:11:28   Mag terminal -the wire that is listed -brown -is between ign terminal and positive terminal on coil [Reply]  [No Email]
M-MAN 11-04-2012 18:34:58 184.39.144.12 Report to Moderator	Re: John Deere 720 gas wiring help needed in reply to Canadian Ken, 11-04-2012 18:18:32   Coil is supposed to be powered by ign so it is correct. [Reply]  [No Email]
Canadian Ken 11-04-2012 17:59:35 74.114.77.75 Report to Moderator	Re: John Deere 720 gas wiring help needed in reply to Canadian Ken, 11-04-2012 17:53:29   I forgot to mention -there is a diode in the red wire that goes back to the battery terminal on the switch Ken [Reply]  [No Email]
M-MAN 11-04-2012 18:19:33 184.39.144.12 Report to Moderator	Re: John Deere 720 gas wiring help needed in reply to Canadian Ken, 11-04-2012 17:59:35   It should be there to stop the alt backfeeding. [Reply]  [No Email]