Recently the last couple months, my '03 TC35D (1400 hrs) when driving along sometimes cuts out (but never shuts off) and most recently when after mowing for 2 hours or so, and I shut it off, it won't start. I did some digging and trace back on the wires. When I run a hot jumper to the starter solenoid (white wire), it starts every time. So, I pulled the "spade" off the solenoid and checked the voltage when I turned the key to start it. It would fluctuate at 7, 5, 8, 3 volts..., very erratic. So, I traced the white wire that attaches to the solenoid on the starter and it goes to a 12v timer apparatus that has multiple functions, one of which is the glow plug activation, as well as the wire to the starter. If I don't have the 12 volts on the white wire when I try to start the tractor, guessing I need a new "timer apparatus", or is there something upstream that I should look at. I took the back off of the timer and saw a small computer board with capacitors, rheostats, transistors, and lots of solder joints. I couldn't tell the any joints had cracked, but since it occurs when it warms, guessing something may "open" when it shouldn't. Does that make sense, and logical trouble shooting? I'll contact the dealer to see if that is the appropriate part I should be looking at..... any thoughts appreciated.