Hello, I am a new owner, I attempted a search but with little results to see if there is a just out right guide to which wire harness i need for an aftermarket stereo. I have an 06 300 Touring. I have the 1.5 din non navigation with no steering wheel controls. My radio has "ref" next to the tuning nob. I ordered a double din bezel that comes with a basic harness but from what I am reading that may not quote cut it. How do I know if I need a different harness? I have seen many and I am unsure which I will need. What are some ways to find out which harness will be required? Thanks in advance and I did search for this but nothing was clear cut on how to tell which, and I'm sure I'm not the first or last to ask the question so maybe having this information in one post will save others some time and effort in the future as well.