This is a great update kit if you are restoring your car. The old wiring harnes is simply not expandable. Adding any modern ammenities ends up causing another a load on a old harness that just simply introduces problems. You might ask can a novice install this harness, well I was a novice and I was able install it because of the easy to follow instructions. I am so glad I installed this kit because of all the new addons I did not expect to add until much later. It was such a great kit I suggested CJ carry it some time ago. You won't go wrong going with this kit, consider it an investment not a cost!