You're correct, sorry for generating confusion.The high limit switch you drew a box around is already wired in. The new control he bought is a replacement for what he had. I will say it one more time and am then I'm out. In the box with the new control will be a red wire. Stab the one end to "limit" on the back of the control. Wirenut this red to the black "L1" wire and the black power wire. Don, you are making this way to difficult. No need to rewire anything....