i just bought one on sat on ebay. lol. my friend has one. it worked on his dads car. but it didnt work on his fit. he said it could be his own phone thats the problem. hopefully it works for me.
i bid on ebay. search up elm327. its around $15-20 if you select 'buy it now'. but i won the bid at $11

. just find 'ending soonest' on the list of sellers and start bidding!
*and make sure its a bluetooth elm327. not usb adapter for laptop.