Greetings,
Thanks to all the previous posts, I'm making good progress on installing a new Blaupunkt Munchen in my 300E. Unfortunately I'm unable to find the fader connections to the rear speakers. It looks like I'd have to disassemble the center console much further to get to them. Question I have is do only the positives to the speakers run to the fader? I've identified the following wires:

right and left out from becker to fader (grey with red and green)
right and left from fader to front speakers (black with red and green)
illumination wire (blue)
ground wire (brown)
This leaves two other wires (with red and green stripes) that must be output to rears.

I did find the connections near the radio that join the speaker wires to the fader front output wires.

My question is, to bypass the fader, can I simply splice the right and left from the becker to the two output to the rears? (I.e. bypass the fader for the positive wires.) What about the negatives? There's only one leading from the fader. What if I leave the fader in place and use the original output from the becker for the rears and the unspliced front speakers for the fronts?

I've tried searching archives and am still a little confused. Any help is appreciated.

Tie into the rear positives at the fader control and then use the negatives from the fader input at the back of the radio for the rear negatives, then hook up the fronts directly to the plugs that are behind the radio.

Scott@Lajollaaudio

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The Mercedes Specialists Since 1986

You may remove the front speaker wires from the fader harness and connect them direct to the radios front speaker outputs. Connect the original speaker wires to the rear speaker outputs and leave the fader control in middle position. Dont make it more complicated then it is.

bypassing fader in 87 300E

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John

2003 Firemist Red/grey leather SL 500
2015 Palladium Silver/black mbtex GLK 350
1987 Smoke Silver/burgundy mbtex 300E Sportline (SOLD)

Click to see 87 300E

DONE! What an amazing difference, with just the head unit changed! Thanks for the help everyone, that's exactly what I did with the fader. Wanted to get it completely out of the loop due to potential signal degradation, but I don't think it would have been worth the hassle in the end.