Thank you all for all your help. That fix the car,no more noise thank again.
You were right on, thank you very much.
Your welcome and no problem.Thank you Jo E Lefors for that helpful picture. There have been so many people in the past have a faulty Subwoofer under the seat and not know what to do. I tried to describe the best way to unhook it, but since mine doesn't have a sub I couldn't provide a picture. You solved the mystery and I'm sure there will be many more people need to see that picture in the future. DCO.