These settings below for me for functional cruise control, but the "Set" indication on the dash did work. I thought it may have been an FPV cluster config difference.
The switch input needs to be B16 Pin not CAN. The rest of the inputs for the CC are CAN so
I was working with Haltech on it, but haven't followed up as Im using the IC now.
On the IC7 im using the Trac/Launch control icon with the colour changed to Green for Cruise Active Indicator and Cruise