Just replaced all the internal bulbs with LED's which makes a massive difference, thing is and I'm don't think changing the bulbs has caused this but the internal light doesn't come on when I open the doors. I've fiddled with holding the central button in for 3 seconds etc but can seem to get it to work on automatic. The light works on the button though.
Any idea's?

Must have been a slightly loose connection somewhere because after fiddling around a bit it seems to have sorted itself out.