this is in a 87 300sdl, radio was gone when i bought it not sure if these go to it looks to me it is separate from the others

forgot to add pic

Attached Thumbnails

 

I believe that's the antenna cable.

the silver tipped cable is for the antenna, the bundles are for speakers and antenna motor.
I'm moving this to the audio forum for better answers.

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

the old becker had several connectors on the back. The silver tipped black cable is the antenna, the bundle with the yellow, green, black and red are for the speakers and DO NOT match the colors for an aftermarket deck harness. they are separated into left and right channels only at this point. The front and rear control is done by the fader (for simplicity lets leave the fader out for now, pretend you only have two speakers) The power, ignition and ground wires are off in the top left corner of your picture. The antenna motor should be on it's own switch and not worth trying to make work with an aftermarket deck as it cannot be easily controlled by it.

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1982 300sd, new project car to restore

It doesn't matter if you know what you're doing, as long as you look like you know what you're doing.