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Idon't know if these will work but they are GE 4415A, not sure if they are a standard auto high beam... not sure of size....http://www.nextag.com/GE-Lighting-4415A-Automotive-632477336/prices-html
GO TO TRACTOR SUPPLY, the have natural amber and the yellow amber. The have the single headlamps and or quad. only thing you may have to do is it re solder the lugs.