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

Aftermarket HU install power problem...?

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Old 04-22-2009, 09:04 PM
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2005 c230k Sport
Aftermarket HU install power problem...?

Alright, I'm trying to install an F90BT in my 2005 C230. I have the Scosche VW03B adapter and have tried swapping the red and yellow and tried leaving them the same.

The only way I can get the unit to turn on is if I wire both the red and yellow leads together, then it will turn on, but remains on even when the car is turned off.

Anyone have a solution to this problem? What am I doing wrong?
Old 04-23-2009, 12:18 PM
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Grab ignition from the Cigarette lighter if i remember correctly is the black and yellow wire but either way check with a volt meter.
Old 04-27-2009, 10:24 AM
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2006 C230
This may help.....
Attached Thumbnails Aftermarket HU install power problem...?-w203audio.jpg  
Old 04-27-2009, 12:26 PM
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I got it all sorted out. Thanks for the input.

It is the black/yellow wire in the lighter for ignition power, also the middle (orange i believe) wire works perfect for the ilum.

Now to figure out the ****ty radio reception...
Old 04-28-2009, 09:18 AM
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Originally Posted by FortySix&2
I got it all sorted out. Thanks for the input.

It is the black/yellow wire in the lighter for ignition power, also the middle (orange i believe) wire works perfect for the ilum.

Now to figure out the ****ty radio reception...
Look at the Diagram, you have to power the amplified antennea; it's not powered through the Coax....
Old 04-28-2009, 12:09 PM
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I need to power it using the power lead attached to the adapter i bought right? I have tried that, with both the antenna and remote turn-on leads from the deck with no success...any advise? Or do i need to power a different lead? One in the factory harness perhaps?
Old 04-29-2009, 10:34 AM
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The one you need to power is in the factory harness, not in the antenna adapter. It's labeled antenna in the Diagram. Stecker 2 Position 13, it's Black in color if memory serves.

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