Dual Burner Infinite Switch Kit 12002121

Turned off power at circuit breaker.
There is a panel on the underside of the stove top with four hex head screws. Removed it to give access to the switches beneath the knobs. A socket set was useful here.
Identified the switch that was shorting. Detached the wires connected to that switch. They are all quick connects, but some are tight so pliers helped here. (It is a good idea to keep track of which wire is supposed to go where. Also there is a wiring diagram available somewhere on this site.)
Removed the switch by taking out the knob on the top and loosening the two Philips screws on either side of the switch stem. The switch came out easily after that.
Put in the new switch, reattached with the Philips screws, and replaced the wire connection. Replaced panel and turned power back on.
Turned on burners to ensure proper operation.

One important note is you can't buy the control for the right front burner (Custom Control) by itself. This kit included both the burner, control and wiring harnesses. This is a retrofit, I am assuming a known problem with the original design. This repair requires the cooktop to be removed from counter, turned upside down, and disassembled. It comes with a 45 step instruction sheet thats pretty good. Let me point out a few things that are helpful: 1) The screws to attach the control to the switch plate are too short. These are 8/32 screws 1/4 inch long. I had to go to the hardware store and buy two screws 3/8 long and cut them, since 3/8 is too long of course. Follow directions carefully, you need to remove the bottom cover and fan to disconnect it before taking the burner box completely off. The shaft of the new control is shorted than the other controls so you need to put a "filler" in the burner nob. THey suggest you use the rubber gasket from the old switch so make sure not to throw it away. One other note, since this is a retrofit, you need a drill. You need to drill out two slots in the switch plate to mount the new burner control. Good Luck.