I just replaced my older interior lights with updated two LED bulb white/red units. The multi colored units are wonderful when running on the water at or hanging out at the dock at night. The units we bought through Discount Marine were the best deals (about $30 each). You have a choice of white plastic, chrome, brass, stainless, etc but why spend a fortune! We bought the white plastic, which are great. Regarding installation, you have to route out a small channel in the fiberglass to set the two wires in as well as the connectors. A dremel was perfect for the job. The LEDS add a nice change to the cabin and a power savings as well. Shop around as prices vary................lots of discount marine parts sites on the internet to save you $$$$$.