You'll need to know what type of base your present bulbs have.I want to switch to LEDs as well. How do you figure out which LED bulb to buy as a replacement? And do you have any recommendations on where to buy them? I have several 5" diameter lights with a toggle switch on/off. they are plastic, I cannot figure out how to open them up to get at the bulb. I also have the brass lights that mount on the walls and swivel and have a dimmer on them already. I cannot find anything on the bulbs or in the specifications that tells me exactly what bulb this is to buy LED replacements.