Hello, this is my first tractor JD 4100. I got it the other day, it ran fine for quite a few hours, multiple times I turned it on and off with no problems. When I tried this morning it would not turn over. Lights work, I hear 2 clicks when I turn the key to on, will not turn over at all. Checked to see PTO and transmission were in neutral, they were. Changed gears to make sure it wasn't stuck in low or high gear. Jumped a wire from one side of the starter to the other and it turns nicely but doesn't start still. Seat switch seems to work, I hear a click under the hood when I engage it. Checked voltage through seat switch, does 12v run through all 4 connections when engaged or just certain ones? I believe I found the neutral safety hooked to 2 screws on the side of the transmission. Had 12v there. How do I check to see if that has made a connection with this safety circuit, in other words where does it come out so I can check the other side to make sure the proper voltage is there? I am also charging the battery even though I have 12.5 v there just to be 100% it's not the battery. Have not touched the PTO switch very much so I haven't even tried there yet. Any help would be appreciated. Thanks in advance.