C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

Trouble Installing an indash in a 02 coupe.

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Old Aug 9, 2010 | 05:24 PM
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Trouble Installing an indash in a 02 coupe.

Sorry for starting a new thread, I have gone through the search method (found alot of helpful things, but not exactly what I was looking for) I have the harness and the antenna adaptor, and I connected the audio wires (easy part), but when it comes to getting the unit powered up, I seem to get stuck. What exactly do I have to do to power the indash?

PLEASE HELPPPP!
I've been trying to do this for the past 3 days and no luck.
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Old Aug 9, 2010 | 06:19 PM
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From: fort worth, tx
06 C230 SS 6spd
Look for the 12v power source that originally powered up the OEM unit which is usually a red wire and tap into it. It's easier if you have a volt reader so can if it is the correct wire when you turn the car on. Another way is to locate the radio fuse in fuse box and then tap into that line from the fuse box.
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Old Aug 9, 2010 | 06:24 PM
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phister's Avatar
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From: fort worth, tx
06 C230 SS 6spd
Most harness kits will usually tell you which color wire goes to what on the factory harness. If you don't have it you can probably Google it and find a layout of it.
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Old Aug 9, 2010 | 06:28 PM
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08 E63
Connect the red wire (acc/ignition) from the head unit to the Cigarette lighter (think its a black and yellow wire) double check with a volt meter.. then it should work.
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Old Aug 9, 2010 | 06:51 PM
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What wires are supposed to be connected? (besides the audio cables)
Red, yellow, and black if I'm correct....
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Old Aug 9, 2010 | 07:02 PM
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08 E63
Originally Posted by edgarinho10
What wires are supposed to be connected? (besides the audio cables)
Red, yellow, and black if I'm correct....
Yellow = Constant 12 Volts (red/blue or blue/red one of those 2)
Black = Ground (brown wire)
Red = Accessory or Ignition (black/yellow) at cig. lighter

Please double check all wires with a volt meter
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Old Aug 10, 2010 | 12:18 PM
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I checked it out this morning, and for some reason it just wont turn on. What else am I missing here? Help please
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Old Aug 10, 2010 | 12:42 PM
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From: SoCal/NorCal
08 E63
Originally Posted by edgarinho10
I checked it out this morning, and for some reason it just wont turn on. What else am I missing here? Help please
hmmmm..... Is your cig. lighter working?? did you test the cables to make sure they got current?
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Old Aug 10, 2010 | 03:13 PM
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Had my neighbor (certified mechanic) check it out for me. Had a blown fuse under the hood, and a blown fuse from a cable going from the ignition switch to the stereo. Wow. No wonder I couldn't figure it out, if it wasn't for him, I would have wasted another 4 days lmao.

Only question, for future references when you replace a fuse, what exactly is the importance of the amp of the fuse? (no worries the fuses that were blown out were replaced with same amp fuses)
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Old Aug 10, 2010 | 11:38 PM
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W203 C180
always replace the fuse with the same amp rating.
The fuse is rated to blow before the wire melts. If the fuse rating is higher than the current rating of the wire, the wire will burn first and you have a nice lil fire happening
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