The car is a 89 420SEL with a six speaker system and amps. Now the problem is that there is sound only on the left (driver side) and there is no sound on the passenger side either rear or fronts. Could this be a probelm with the amps or is it a problem with the head unit?
Also when I touch the fader there is a lot of disturbance as can be heard in the speakers, so could it be the fader switch?

My second question is that is it possible to somwhow add the original mercedes CD changer to the stock becker headunit? If so what type of a cd changer work.

I want to maintain the stock system and therefore if the becker unit is gone I would still go and buy another used becker unit. I was earlier thinking about going with an aftermarket but have changed my mind and want to stick with the OEM.


Thanks

Sohaib