As i read posts i saw that the problem with left speaker is normal problem for nissan.I know that in USA that problem can be done fast but in my country with our dealers it is not impossible.I bought used Bose head unit,but i dont have code.My dealer sent a few messages for nissan Europe without response(maybe someone could get me a code if i could give info on cd headunit?)Anyway i want to repair that problem in some electrical company.Do you know whats wrong in this cd?I could say to them, then they want have to look the problem.If it want help i will have to buy some normal cd.Is there some ith so big place to replace stock Bose head unit?