I am in the same boat here. Looking for some amber sealed beams. But now I think I am going to get a can of metal cast. then if it ****s pay the bucks for the real deal. Eric
Taillight king lists them but has none in stock. I'm looking for two myself. http://www.taillightking.com/fog_Driving_light-Bulbs.htm 4433A is the correct part number. Looks just like a common 2D1 headlight except it's amber. The 4415a listed on ebay have two screw terminals on the back, and doesn't have the 3 locating lugs on them to position them in a 2D1 housing.
I know this is an old post, but I'm new here & here goes just in case someone needs it.... The part # 4433A 7" amber lights are no longer made, but can still be found. I just bought the last 4 at www.replacementlightbulbs.com. but they still get them in stock once in a while, so keep checking them out! There is also one 4433A on eBay right now, but you can bet it won't be there for long!
These guys might be able to help: http://www.davisbus.com/accessory parts manual 2006/02Lights_02.pdf
I found some 5.5" amber sealed beams on Amazon.com for half the price of anywhere else. Maybe they have the size your looking for--
Hi I have a fair number of these 4433A - brand new. Yes I signed up just to tell you. They're excess stock from a local school bus builder. Let me know if you're still interested. I'm located in the Dayton Ohio area.