hmmm, sounds like your problem goes beyond your wiring harness. I mentioned the harness because they wear out very easily. Check the wiring in your EZ-start wand. If it has enough power to crank the motor, it definitely has enough power to make that plug glow. Something must be shorted in there.

Sorry you had to buy a wiring harness just to find out you didn't need it, but at least it was cheap.</p>