How to Troubleshoot & Replace Whirlpool AP5989734 / W10852510 Indicator Light (Control Panel)

Went to google and found "Appliance Pros" Information. Pulled up a complete diagram of the cook top. Called and ordered the Switch Kit by describing it from the diagram this was April 1, 2015. I had been told by TWO parts house that the Indicator Light part had been discounted, but you could still get the Lens. On the morning of April 2, 2015 I again called "Appliance Pros" and to my surprise they were able to furnish both of these parts. Since they were in the packing stage on the Switch they added the Light Indicator and Lens and shipped them together and only charged one shipping charge. I received these parts on April 4, 2015 and the were exactly what I needed and had good instruction and diagrams on how to install. Installed on April 5, 2015 and they worked perfectly. 

Turn off the electricity at the circuit breaker. Remove all four burner coils and pans. Remove four phillips screws, one in each of the burner openings. Lift top of unit then unplug two electric leads from old indicator light and remove the light fitting. Attach wire leads to new indicator light and slide it onto the bottom of the red lens. Lower top and reattach four screws and replace burner pans and coils. The knob is backordered so it has yet to be replaced by simply pulling up on it.