No. I heard that from alot of people that have been through this same process, but when I installed the non-ultra overlay harness to the back of the stereo, then connected the speaker harness to that and the tour pak, it worked fine. The only thing that I've noticed it that on the right side of the tour pak is a volume control. It doesnt work, but on the left side of the tour pak is a channel button and it works. Thats okay I dont want my wife controlling the volume anyway. Hope this helps, if you need anything else just let me know.