To be honest with you, the best deal to be had is at your local car stereo shop. Chat up an installer for a while, then ask him if he can help you out. The store pays under $2. for most harness' which they sell for $20.00. I often did it, and am sure you'll find many others that will too. Not the most honest method, but cheap and quick. Assuming it's not an elaborate dash kit, same thing should work.