been there and done that with the lights,
my top lights are weldons different then the others lights, I had got a complete light for $10.00 each on sale, and swaped them out, here is a link to a giradin bus
http://www.girardinbluebird.com/content ... liste.aspx
click on promotions, then on parts, they have sales flyer, I have order from them and there fast.
gbstewart