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Yellow/Purple Wire By Itself

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  • Yellow/Purple Wire By Itself

    This unit is going into my 1999 Chrysler 300M. The stock radio has a yellow/purple wire all by itself with a plug on the end of it plugging into the back of the stock radio. My aftermarket radio has no place for it.

    The 300M forum says it goes to the PCM and is used for the radio's memory. People say if left unattached to anything, the radio won't retain it's memory settings.

    Am I to assume that won't be the case with my brand new unit?? My new unit should be able to retain it's own memory, correct??? This is an 11 year old car so, maybe back then it was more economical to use the car's memory for the radio then the radio.

  • #2
    according to this diagram i found, it is not needed, pink, and ground will keep the memory on the new radio:

    1999 Chrysler 300M Car Stereo Radio Wiring Diagram

    Car Radio Constant 12V+ Wire: Pink
    Car Radio Ignition Switched 12V+ Wire: Red/White
    Car Radio Ground Wire: Back Strap
    Car Stereo Illumination Wire: N/A
    Car Stereo Dimmer Wire: Orange
    Car Stereo Antenna Trigger Wire: Orange/Red
    Car Stereo Amplifier Trigger Wire: N/A
    Front Speakers Size: 6 1/2″
    Front Speakers Location: Doors
    Left Front Speaker Wire (+): Dark Green
    Left Front Speaker Wire (-): Brown/Red
    Right Front Speaker Wire (+): Purple
    Right Front Speaker Wire (-): Dark Blue/Red
    Rear Speakers Size: 6 1/2″
    Rear Speakers Location: Rear Doors
    Left Rear Speaker Wire (+): Brown/Yellow
    Left Rear Speaker Wire (-): Brown/Light Blue
    Right Rear Speaker Wire (+): Dark Blue/White
    Right Rear Speaker Wire (-): Dark Blue/Orange
    My OLD 2001 Mitsubishi Eclipse GT:
    "The Project That Never Ended, until it did"

    next project? subaru brz
    carpc undecided