2004 clk 320 radio wire identification
Printed From: the12volt.com
Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=133647
Printed Date: June 20, 2025 at 5:56 PM
Topic: 2004 clk 320 radio wire identification
Posted By: 9time
Subject: 2004 clk 320 radio wire identification
Date Posted: February 20, 2013 at 6:23 PM
need to know what wires is what ..power, ground, remote,constant coming from the car...have a wire harness but the pins dont line up
thanks
Replies:
Posted By: Ween
Date Posted: February 20, 2013 at 10:43 PM
what colors do you have...red, brown, black, blue wires ..with stripes perhaps?
m
Posted By: howie ll
Date Posted: February 21, 2013 at 1:19 AM
Red primary is constant power.
Brown ground.
Grey primary illumination if present.
Accessory will be at the cigar lighter in centre console, just lift the gear trim and unclip the ashtray housing. Or glovebox light.
This is a can of worms for the non-expert.
They stopped using an ACC about 99, went CAN data for ACC, illumination.
Fibre optics (2 thick orange wires to control amp and auto changer if present).
They changed from ISO to MOST/Quadlock plugs in approximately 04.
Except there's nothing at the front if it carries a left rear (behind wheel arch) amplifier.
Some of the most plug sets had different speaker pin configuration to every other car manufacturer for instance from approx 05 m/year.
I carry 2 types of Bluetooth kit adaptor, one for Mercedes and a second for some Mercedes plus Ford, Audi, VW, Renault, Peugeot etc.
Then there's the Command Series, different plugs and wiring.
If the original is a single DIN branded sound 10, 20 etc. It will be ISO plugs with a separate ACC, get the interface plug from Metra, Scosche etc. and save lots of time.
-------------
Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: 9time
Date Posted: February 21, 2013 at 8:32 AM
RED / blue wire
brown wire
GREEN/ red wire
yellow/black wire
blue/white wire
2004 clk 320
Posted By: howie ll
Date Posted: February 21, 2013 at 9:31 AM
RED / blue wire = 12V constant
brown wire = ground
GREEN/ red wire = ACC if next to brown on the supply plug
yellow/black wire = mute ?
blue/white wire = Illumination
Test all of the above.
This should be an 8 pin plug with a clip to one side
This should be the layout:-
iso_power_plug.bmp
Please note the speaker plug looks similar but the clip is centred. ------------- Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
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