OK I get it.

I think.

This is the bulb I have but with a glass cover.

http://www.topbulb.com/find/Product_Description.asp_Q_intProductID_E_46050

I can't believe they want $20 for that thing. A 20W 12v is half the price.

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You don't need a weatherman to know which way the wind blows - Robert A. Zimmerman