I might have problem with mine can anyone suggest a site or place to buy one at a fair price?

 

Oh man... The dealership (if memory serves) charges ~$85 new. Find a wholesale distributor. My area has one. The parts are always at least 35% cheaper. Of course, the '03 tail housing should be the same as the '99 - '02. I've got two spares here probably worth $30 bucks shipped.

*edit*

Did a quick ebay search for ya. Check this out -OR- Check this out.