The radio amp in my 190E seems to be bad.Tthe PO bypassed the amp by cutting most of the wires so I fixed that mess and now only the dash speaker on the driver's side works. The car has the Alpine 6 speaker system with active loudspeakers and I figured that something was wrong with my radio because the dash speakers were getting overloaded with bass though the amp is supposed to filter it to the door speakers. I discovered the hackjob when I was tracking a fuel leak. I used butt connectors install a new pigtail.

This confuses me. I though the amp was only for the door speakers yet all of my other speakers except one has stopped working. The wiring diagram is 124/4 in the electrical troubleshooting manual. http://www.startekinfo.com/StarTek/outside/11832/Resources/201Create/PDF/01002.pdf

Anyone have ideas as to what went wrong and how i can test the system? I am going to check the fader but I believe that has been bypassed.

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Current: 1975 450SEL, 83 300D, 88 Yugo GVX, 90 300D OM603 swap, 91 F150 4.6 4v swap, 93 190E Sportline LE 3.0L M104 swap, 93 190E Sportline LE Megasquirt, 03 Sprinter, 06 E500 4Matic wagon.

I found that my fader was disconnected completely. I went ahead an bypassed it, the brought in the rear speakers. The passenger side dash speaker was simply a loose connector. Still no door speakers. 12V goes to the amp.

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Current: 1975 450SEL, 83 300D, 88 Yugo GVX, 90 300D OM603 swap, 91 F150 4.6 4v swap, 93 190E Sportline LE 3.0L M104 swap, 93 190E Sportline LE Megasquirt, 03 Sprinter, 06 E500 4Matic wagon.