Scott thanks for that info. That is kind of what I thought I needed to do. I did buy the red and green bulbs. Marine Beam site is excellent about specifying what type and heat range bulbs to get for each fixture. I think it was worth buying from them just for the info. I plan to eventually convert all my lighting including the 120V to LED. Right now I have done the 120V screw in bulbs to LED. As you said it will reduce battery draw on the DC side. Also it will reduce generator load especially on the spreader lights. I hope to find a good LED for them at a reasonable price.