Bought 1994 C200. The guy sold it to me with an antediluvian tape player in it . I'm gonna change it and also hook-up a CD-changer in the trunk BUT I couldn't find wiring in the trunk [&:]. When I pulled the stereo it had plenty of cables attached from back, I assuned some of those were to control the changer but I could find nothing in the trunk! Is there any specific place to look for it? Or Shall I have to go through new wiring??? (Oh, NOOOOO)
Please help! (SOS)

 

The wiring should be there in the trunk on the right side. (W202) One wire should be orange and the other one should be multicolored.