Where to find replacement turn signal light

[joshetude]

The left hand turn signal light which rests inside the driver's side quarter panel has fallen out of my 2001 VW Golf TDI somewhere on a freeway. (The wire it was connected to had frayed and detached). Know any good sources to acquire a replacement?

 

[lovemybug]

Salvage yard would be my first response.

 

[Seatman]

Or ebay, or on here where someone is parting a car for spares