Level of DifficultyReally easy
Time to do repairLess than 15 mins
Age of ApplianceMore than 10 years
1. Killed power and removed the regulator's knob, noted the position of the old control.
2. Took off the cover for the center vent and loosened the two screw holding the housing in place--the screws didn't have to come out completely as it is a U-shaped friction hold.
3. Unscrewed the two screws holding the old control switch in place--lifted the housing enough to get at the old switch and carefully pulled it loose--it was a front burner so the control switch was about as far back as it could be but still wasn't that hard to get at.
4. Turned the new switch to orient the wire connectors, then, using a needle-nose pliers, removed each friction connector, one at a time, and fitted them on the new switch (note: one of the wires fitted best if it went under as opposed to around the base of the new switch).
5. Replaced the control back through the housing and screwed it in place, making sure the orientation of the control matched the way it looked originally.
6. Slide the housing back over the two screws and tightened, replace vent.
7. Replaced the knob and turned on the power.
(The above took me about twice as long to write as it did to make the repair and I write professionally but am not a professional electrician.)
Also, I bought a second control switch because, given the age of the unit, I'm sure another one will go. The second one will assure that it won't happen :-).