From memeroy,
Gater & knob off, along with front trim of the ctr console.
Two scews behind cup holder & hazard switch (depending on model)
Remove head unit plastic facia surround.
Remove two screws holding the heater unit, + three harness connectors.
Lights will be at the back of heater unit, or you may have to split the unit to get at the ones inside, depending on modle.
Probs about 40mins work.