Todd M El Cajon , CA December 10, 2018 Appliance: Model C-301 Infinite control knob replacement for Jenn Air C301 Received the parts after ordering over the phone talking to parts plus representative. Out of the box they were not an exact match (older cook-top this is the replacement part) found a u tube video with a wiring diagram that showed the old and new part and how to wire back up. Everything works great now thanks. Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours