Hey Ebb, I purchased some LED bulbs for my original perko nav lights and hope to change the cabin light bulbs to LED bulbs soon. I took my glass red, green, and clear lens off and soaked them in vinegar to get some of the minerals off and that worked pretty well. Looking forward to low energy consumption. Replaced my old #68 bulbs with the 9000425 from Dr. LED. Interesting that the led bulbs have to be colored even when they are behind a colored lens.