Cleeve, I have a question for you:

I have a Becker 1432/BOSE/Silverstone equipped 1992 600SEL and have removed the cd changer. I got the car without the cd cassette and figured I could use the trunk space for all the road trips. I removed the extension cord for the round plug routing to the cd changer and plugged it directly into the receiver, but the head unit is not showing a thing...turned on initially, let me enter my radio code as usual, but the screen is blank, and after 10 seconds or so the antenae lowers and the head unit powers down. Do I NEED the cd changer in the circuit?