hah ha.. there arent any.. welcome to the myth of LED.. the actual LED is always a standard LED and its voltage drop will be in the region of 3.2V for white... its current draw just like plasma will determine its brightness, but its voltage is a constant. Ok.. so you want a 12V LED.. what you really want is an LED that has a driver that will run off 12V. ..Given that information, you should be able to adapt to any LED