Whirlpool WP74004153 Indicator Light OEM Part

I ordered the replacement part and undid two screws on the front of the cooktop then used a nut driver to undo the clamps holding the burner in.I took a picture of the wiring then used needle nose pliers to gently pull the connectors off the terminals. reinstalling you just line up the new burner with the old one and screw the clamps back on. there are no predrilled holes the screws just bite into the insulation.

This unit is just shy of 10 years old. Installing the new control panel was pretty easy and that took care of the ovens and clock. Be aware that the actual front that you normally see is a semi-sticky decal and you either need to buy a new one or carefully remove the original and reuse it (what I did). Upon examination I could see black hazy residue on the inside of the control where I assume a component fried. I was determined to fix the on indicator while I had it apart. The new indicator light did not solve the issue. The indicator is wired in series with all the burner switches and the "hot surface" light. I had a new burner switch from when I tried to repair it previously. The root issue here is finding out which switch is shorted since they're all in series and inaccessible with the volt meter unless removed. I got lucky this time and noticed one switch was blackish on the inside. NOTE: There are two different switch part numbers (2 of each = 4) so you have to really purchase one of each to be sure you have the right one available. I had the right one and replaced the one that looked suspect. Both the on indicator and hot surface lights work properly now. The other choice is to remove all burner switches and test each port (blue wire) for short to ground when "off". Be careful! You should be able to do this with the power disconnected.