I bought my first Mercedes, a 1986 190E 2.3, three weeks ago. Driving it home, I heard a clicking noise that sounded like it was coming from behind the passenger's side of the dashboard. I thought it was probably just a creak since the car is old. A day later, however, the stereo started to fade in and out and then it started to alternately cut off and come back on.
The owner of the dealership where I bought the car told me that Mercedes stereos are notoriously faulty and that I needed to replace it with a new stereo. I had a new stereo installed and I kept the original stereo. Now the new stereo is giving me the same trouble. It cuts on and off and I still hear the clicking noise in the dash.
I don't think the problem is in the stereo, but rather in the car's wiring. Does anyone have an idea what the problem could be? I'm not a mechanic and I don't know much about the inner workings of cars, so any advice will be appreciated. Thanks.