I installed the FES Auto Sport several yrs ago to keep my sport mode on all the time. Can this unit or a similar device be installed to keep my cruise control constantly on? Any idea which wire to tap into in the right foot well?

 

The module doesn't keep sport mode on all the time. It merely simulates pressing the sport button (to the computer) when you start the car.

In a similar way, the module can probably be made to "press" the cruise button, but the vendor would have to build it into the firmware. However, I don't see much benefit. The first time you engage the cruise, it would be a single press instead of a double press, that's all.