Where does the new control module get install at?

The Waiter ECC re-uses the enclosure from your existing control module.  You remove the control module cover, pop out the old circuit board and install the new circuit board. All the plugs that plugged into the old circuit board will plug into the new circuit board, making the installation a snap. There are two additional plugs on the new controller circuit card,  A four pin plug ( NOT USED) and a three pin plug, used for the outside air temperature sensor.

You can re-install the control module at the same location as the original, or depending on wire lengths, relocate it to a more convenient location.