I have a Jenn Air CCE3531W and just replaced the dual infinite burner switch. The replacement part# is 12002125. The directions that came with the replacement were poor at best. After about 9 attempts I finally figured out the wiring. It is as follows:
Jumper wire supplied with new switch hooks to P1 and S1.
Double red wires must be separated and a new spade clip put on the one that comes from the inner RR burner. Put the red wire from LF switch on P2, and the red wire with the new spade clip on 2.
Gray wire from the burner on indicator light goes on S2.
Purple wire from outer part of burner goes to 4A.
Blue wire from outer part of burner goes to 4.
When completed, you will have to put a small piece of folded paper in the knob to shim it up to keep it from rubbing on the glass surface.