Presumably you're talking about the pads that connect with the interior light plunger? If so, you could try the pads that you can buy to put under items to stop them scratching furniture etc.. Normally available in various sizes from numerous 'diy/hardware' type of places.
Foam anti-scratch pads from Poundland is exactly what I used when my passenger door pad fell off and central locking went haywire. Had no problems since!