Question about Pioneer DEH-2000MP MP3 CD AM/FM Car Stereo Head CD Player

1 Answer

Car lost presets on ignition

Each time I start my car mij radio resets. I have an old vw so I know that the red and yellow wire need to be switched so my real question is
How do I switch those wires ? do I pull them out their harness or schould I buy a new adaptor were I can switch those wires ? or what ?

thanks in advance
Christophe

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  • Cdesolator Feb 13, 2009

    ok, but in my old VW the yellow wire from the radio is red and the red wire from the radio is red/brown. so how should I fix this ??

  • Cdesolator Feb 13, 2009

    ok done that, so in my car the red wire is is always on and the red/brown wire is ACC.

    but on my radio I have the always On wire on the place were the acc wire must be and the acc wire were the always on wire should be. do I need a new adaptor for my radio or do I need to rewire the radio wires in my car ?

  • Cdesolator Feb 13, 2009

    thanks Benimur,

    I tried it and it worked

    you just made my day :) !

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  • Master
  • 6,966 Answers

Hi and welcome to FixYa,

Let's start with the basics:

  • yellow wire to an always on B+12;
  • red to ACC terminal of IGN switch;
  • black to ground;
The yellow/always on is responsible for keeping the memory, that is the stations that you have had memorized/selected. The always on is directly connected to the battery's + terminal.

Would appreciate any updates. Good luck and thank you for using FixYa.

Posted on Feb 13, 2009

  • Louie  Role
    Louie Role Feb 13, 2009

    The best check then would be with the use of a DVM/VOM (voltmeter) or preferably a test light. The always on wire must measure/read 12VDC with or with the key in the IGN switch turned. On the otherhand, the ACC wire would only have +12 when the key is turned either in ACC or RUN/ON.




  • Louie  Role
    Louie Role Feb 13, 2009

    Simplest would be to switch them, no adaptors needed. The car's red wire should go to the yellow of the Pioneer and the red/brown wire which is ACC should go to the red of the Pioneer.

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