1994 Astro broken fog light

Where can I find a direct replacement for a OEM fog light for a 1994 Astro. Chevy Dealer was $70.00 bucks for one. Any suggestions other than a junk yard for a replacement. Also no power to lights even though the dash indicator comes on. I assume there is a fog light relay under the dash, to that end I bought a Hayes Repair Manusl to get the schematic for the fog lights. Guess what? The manual schematic doesn't even mention fog lights. Is there someplace I can get a schematic that does?