Heater control lights?
Well if your dash lites up - it's not because of a blown fuse - they all branch to all the dashboard devices from that same circuit.
But, if the heater control connector was damaged - that may spell another problem with the harness or the controller itself - which means a dash board has to be taken apart, and that means either a trip to the shop or you can try and remove the trim to gain access to that controller, by yourself.
Since you own a 07 model - that may simply mean you have a blown lamp - but that too - requires a disassembly of the dash so you can get at the knobs and pry them off to obtain access-to the light's socket and grain of wheat bulb - in latter years they switched this to an integrated LED lamp housing
in the knob so you may not be able to get access to it - you'll have to replace it as one piece.
To Help:
- The Box of Fuses, is in the passenger compartment..located behind the Glove Box...
Go see this Thread...
https://www.fordfiesta.org/threads/help-interior-light.10425/post-30155