by SnoWchicken on July 8th, 2008

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I put a new radio in my car and there were 4 wires on one harness red yellow brown and purple. what could the purple be the only thing i notice about it is that the memory is whipped clear every time i turn the car off

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by SnoWchicken on July 10th, 2008
it must be the gray blue and changed color over time. so i guess that wire does nothing for a radio of today
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by Josh on July 9th, 2008
What is the year/make/model of your car?
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- its a 1986 mercedes 190e
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  by SnoWchicken on July 10th, 2008
- I looked around online, but couldn't find much. What I found doesn't appear to be entirely accurate. You'd probably be better off using a multimeter to test the wires. Pending you test and connect them all properly, you shouldn't have any more wiring related issues.
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  by Josh on July 10th, 2008
- This is all I could find...
  
  1984-93 Mercedes 190 Series Stereo Wiring
  Constant 12V+ Red
  Switched 12V+ Black/Yellow
  Ground Brown
  Illumination Gray/Blue
  Dimmer n/a
  Antenna Trigger Blue
  Antenna Left Rear
  Front Speakers 4" Dash
  Left Front (+) White
  Left Front (-) Black
  Right Front (+) White
  Right Front (-) Black
  Rear Speakers 6 1/2" Rear Deck
  Left Rear (+) White
  Left Rear (-) Black
  Right Rear (+) White
  Right Rear (-) Black
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  by Josh on July 10th, 2008
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by squirtgun on July 8th, 2008
that would probably be your battery connection. connect it to a hot (charged) wire when the car is turned off and the key is turned off also.
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- does that mean to connect the wire to the red wire for the radio and if so how do i know thats right with out harming anything.
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  by SnoWchicken on July 9th, 2008
- get a cheap voltage meter anywhere but wal-mart , make sure its made in the u.s.a. and find a hot wire when the key is not in the ignition. this way you know the wire has power when the acc. switch is not turned on. this will keep your radios memory
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  by squirtgun on July 10th, 2008
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I put a new radio in my car and there were 4 wires on one harness red yellow brown and purple. what could the purple be the only thing i notice about it is that the memory is whipped clear every time i turn the car off

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I put a new radio in my car and there were 4 wires on one harness red yellow brown and purple. what could the purple be the only thing i notice about it is that the memory is whipped clear every time i turn the car off

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