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Old 11-18-2005, 02:54 PM
hobospeed's Avatar
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Wriring a new CD player into the stock fader

Hey guys,

about to chuck in a cd payer into my 81 300TD. I want to keep the stock fader. My question is should I just feed say the front speakers into the fader or should I combine the front and rears for each side into the fader? The deck is 100 watts (25watts x 4).


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Old 11-18-2005, 03:04 PM
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Definatley not worth it, it will only degrade the sound quality. All modern systems have all that built into them. Wire all speakers directly to headunit, bypassing the fader entirely. Modern systems output through the fader sounds reeealy really bad, (trust me I tried it). I left the fader in my console, but it doesn't do anything anymore. Sound quality went up dramatically.
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Old 11-18-2005, 03:19 PM
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also which wire do I need to tap from the hazard switch to get a constant 12v to the deck?
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Old 11-18-2005, 04:44 PM
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Don't know...but it doesn't sound like you're ready to "chuck it in" just yet....

I paid a mobile guy $ 60. and it took him a solid hour...He was very experienced and with these old M-B's too, and he didn't chuck it in either....There's alot of wiring to do....
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Old 11-18-2005, 04:54 PM
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Originally Posted by hobospeed
also which wire do I need to tap from the hazard switch to get a constant 12v to the deck?

The red one. I did the same thing when I installed a CD player in my 240D.
1982 240D.
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Old 11-18-2005, 04:56 PM
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I don't know what wire was used for the 12V power but the rear speaker wires run up underneath the drivers side floor mat on my 85 300D.. use that to trace under the console to wire up the rear speakers.

I didn't completely finish the job yet so the fader wheel still works.. it just alters how much power runs to the front speakers.. either full sound or no sound.
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