Stereo upgrade 2007 CLK 550
I have been looking for the wiring info I found here for hours.
I just bought a 2008 CLK280 today and got a £450 discount because there was no sound coming through. I suspect that the Logic7 Amp is faulty but it could be anything. In any case, until I find out exactly what the problem is (I don't have much free time) I should be able to wire up something direct to the speaker cables in the trunk without permanently affecting the setup. (Splice in, solder, leave extra female connectors hanging so I can unplug from the amp and add in my own audio direct to speakers).
Anyways, I have an idea that I think you will like.
1. Unplug the Speaker/Power from the Amp.
2. Fit new Head Unit.
3. Feed 1 pair of speaker wires from the Head Unit to the Trunk
4. Connect this pair into the Front Speaker wires (Screw terminals will suffice).
5. Add a nice 4 channel amplifier with High Level Input to use the same wires in step 4 (Alpine or Kenwood) with HPF/LPF options - Use 2 channels for the rear speakers and 2 for the Subs. Keep the gain low to start with and test the system.
IF you want to be able to use the Fader on the head unit then run an RCA cable from Rear O/P to the trunk for input to the new amp instead of the wires in Step 4.... I might have to do this actually. Yet to get the car checked to see if where the problem lies exactly....
Just curious - did you tap into the cigarette lighter for illumination and switched 12v? Did the Crutchfield harness and instructions take that into consideration?
Thank you,
Eric
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