Well. This is where I am at: 1) The service run switch was very stiff. I could barely get it to flip. So I put a new one in. 2) At the start interlock relay, I had no juice in on position at the Light Blue/Orange wires that go to the fuel solenoid and #5 pin of the EIC Board. So I replaced it. 3) The start relay did not work. So I replaced it. 4) I've removed the seat switch and tested it twice. It works. The seat belt switch has been modified by previous owner. It appears to be closed circuit, so I think it is functional. 5) When I disconnect the seat harness and sit in seat, all three wires have continuity with ohmmeter. 6) I have 12 volts to five wires at EIC: Red/Light Green #14, Tan/White #4, Light Green #11, Orange #12, and Light Green/Black #11. The black wire is ground. 7) I still do not have any juice at the Light Blue/Orange wires on start interlock relay, which go to EIC #5 and fuel solenoid. The machine will now start in the service position. It will also start in the run position, but as soon as I release key from start to run, the fuel shuts off. I have no lights in the EIC. Background info: Prior to EIC lights failing, an employee told me the EIC was remaining lit up after he exited the seat. I didn't follow up and forgot about it. It sat for a couple weeks, then no lights whatsoever. This morning when I was testing things, it lit a couple time when I tried to start the machine. It flashed. Lights only for about a half second. I suspect the EIC is shot. I suspect it feeds power to the start interlock relay to power fuel shutoff solenoid when running. Am I on the right track? Is there a definitive test for EIC? Thanks a bunch, as always.