according to the shop manual (brain gears), the CD changer hook up should be at the rear left trunk. I found a connector there but it looks like the type of connector used to hook up a printer to a desk computer.
I did find the correct connector for MB changer on the passenger side of the trunk near the top, by the trunk hinge.
so what is the connector that I found on the bottom left?
myset up is 6 speaker, all stock stuff.

It would be the phone connector 25 pin...

__________________
The Mercedes Specialists Since 1986

ahhh. Ok. that is the connector in my car also. where is the cd connector in these cars?

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My Daily : 96 E-300 Diesel with 195,000 miles
Retired: 92 300D 2.5 T 345K miles and for sale
Retired: 95 E320 157K miles and currently parked with blown engine

Both retired cars are for sale as is my w124 shop inventory

It would be on the right side of the trunk a 10 pin connector.

__________________
The Mercedes Specialists Since 1986