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Reload Thread: Headunit Wiring Woes! HELP!

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    biggestlou's Avatar
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    Icon33 Headunit Wiring Woes! HELP!

    I need help badddddd! in my 1993 BMW 325i (e36) i need to replace the headunit, i already cut all the wires and i have the speaker ones right but the other 5 or six wires are not working! My current Connections: *Left being from my car, right being from my headunit.

    Red/white stripe (Battery) -- Orange/White stripe (illumination) and Blue/ White Stripe. (i think remote turn on.

    (All In one big bunch) Purple/ White Stripe(switched 12v) and white (turn on) -- Yellow (Battery) and Red (accessory)

    Brown(Ground)--- Black(ground)

    Black/white stripe (Constant 12v) -- BLUE WIRE (FROM AMP)


    If anyone can help get me out of this Cluster F*** i would be so happy! I just wanna listen to my L5 BUMP! Thanks In advanced. ask any questions you need and i will try to answer!







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    Re: Headunit Wiring Woes! HELP!

    Why did u cut up your wires? Wire it back like it was and get the correct harness. Otherwise you will have to get a diagram for your car.




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    Re: Headunit Wiring Woes! HELP!

    I do have a diagram for it but i still dont understand what some of the wires mean! it says it has two 12V wires? what the heck does that mean!




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    Re: Headunit Wiring Woes! HELP!

    One 12 v is a constant. It means it is on all the time. This is used for the internal memory of the head unit. The other is a 12 v accessory which will only be on when you turn the key on. If you're not sure which of the factory wires is which, connect a multimeter to one and ground it with the key off and see if it has power. One of them should have power with the key off.




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    Re: Headunit Wiring Woes! HELP!

    So the one that has power constantly will be the one i connect to the red (accessory) wire??




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    Re: Headunit Wiring Woes! HELP!

    Quote Originally Posted by biggestlou View Post
    So the one that has power constantly will be the one i connect to the red (accessory) wire??
    Read the label on the yellow wire and maybe you'll have hope.



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    Re: Headunit Wiring Woes! HELP!

    on the new harness...

    yellow is constant 12v +
    Red is switched/acessory 12v+
    black is 12v-




    CDT ES comp
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    Re: Headunit Wiring Woes! HELP!

    on the new harness...

    yellow is constant 12v +
    Red is switched/acessory 12v+
    black is 12v-




    CDT ES comp
    Eclipse EA4200 amp on highs
    TC Sounds LMS-r 12"
    nine.1

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    Re: Headunit Wiring Woes! HELP!

    Have you tried to hook that white wire to a ACC power its the remote turn on for the factory amp




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