Hi, Please excuse me if this is a very basic question. I've been attempting to replace some MR16 dimmable Halogen lights (Sylvania Coolfit) in a 12V 50W max GX5.3 Coolfit 50 ceiling recess with led lights. I tried some GU5.3 12V led bulbs and they didn't work, and having put the Sylvania bulbs back,...
