When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Your best bet is gonna be ebay. I found one for like 15 bucks about a year ago. You can go to a dealer and see if they have an extra laying around as well. Make sure to bring your old one to make sure the length is correct.