You can browse through auto supply websites like Autozone's. Actually, you can use what you have, but like I posted, it will involve splicing and taping, although to some lazy installers (or those who can't locate an adapter), it will be easier than installing the adapter to the other end of what goes into the stock receiver. I'd advise getting that one, just make sure you connect the right wire to the right terminal. It will take a little bit longer but you'll appreciate it over, say, at some point the tape coming loose if you just spliced and taped. Oh, and don't forget to wrap the adapters joined together in electrical tape for extra security.