If it's the same as the Captiva, you need to prise the lens out of the rear housing, front edge first, then remove the 2 screws that hold the unit to the roof. The unit is a tight fit into the headlining and has 4 spring clips, 2 at the front, 2 at the rear which need to be depressed with a flat blade to allow the unit to be removed.
At the front, open the sunglass holder and remove the 2 screws in there, then prise out the lamp lens and remove the 2 screws in there also. Again, there are spring clips holding the unit into the head lining on the sides and he rear- the front has some prongs with fit into a gap in the metal surround fitted into the headlining. Unclip the wiring for the lamps and the alarm sensors and hey presto!.
When wiring the leds to the courtesy light in the rear, it is the red and grey wires which need to be connected up, not the red wire which is the live feed. If the orlando is like the Captiva, the wiring is very short and needs a bit of manipulation to expose enough to connect to, particularly if you are using scotch locks, as I did.
It's not difficult to do- I did this on my Captiva in about an hour from start to finish. It does make a difference, but in hindsightI would have fitted 2 leds per side at the front rather than one, to give a better light. in fact, I might go back and do that at another time.
Hope this helps!
Iain
Edited by: bigiainw