2000 E46 318ci - Head unit fitment

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  1. 2000 E46 318ci - Head unit fitment 
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    I have an e46 2000 reg bm and iv just bought a double din head unit, but cant seem to plug it all in properly, i have plugged the bigger black plug in, which powers up the head unit, but no sound?? any suggestions?
     
     

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    if it helps i have the harmon-kardon sound system but in the boot its been unplugged, under the rear parcel shelf, would this stop all speakers from working?
     
     

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    I dont belive you can use an aftermarket HU with the HK,

    You will need to by pass the HK amps in the boot,

    So if you imagine a normal, non HK set up, wires go from the HU to each of the speakers in the car

    In the HK set up, wires go from the HU to the amp in the boot then out to the speakers

    The problem lies here, the HU and amp in the HK system comunicate diffrently to how a normal system would do, so swaping the HU you get nothing from it,

    realistcally you are going to have to re-run all the speaker cables from the back of your new HU, to either:
    each of the individual speakers
    OR
    to where the HK amp is and wire in to the out put side of the amp so you use the exsiting wireing in the car, (less work)

    I dont understand when you say the HK has been unplugged, did it work before you swapped HU?
     
     

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    Quote Originally Posted by sam1832 View Post
    I dont belive you can use an aftermarket HU with the HK,

    You will need to by pass the HK amps in the boot,

    So if you imagine a normal, non HK set up, wires go from the HU to each of the speakers in the car

    In the HK set up, wires go from the HU to the amp in the boot then out to the speakers

    The problem lies here, the HU and amp in the HK system comunicate diffrently to how a normal system would do, so swaping the HU you get nothing from it,

    realistcally you are going to have to re-run all the speaker cables from the back of your new HU, to either:
    each of the individual speakers
    OR
    to where the HK amp is and wire in to the out put side of the amp so you use the exsiting wireing in the car, (less work)

    I dont understand when you say the HK has been unplugged, did it work before you swapped HU?

    Well i only bought the car last week but, it came with an aftermarket dvd screen, he said it just needs fitting, but a wire was missing from it, so luckily i had another aftermarket dvd screen in my corsa, which i swapped to this, but when i plug it in it doesnt make any sound although it does power up.

    What your saying makes sense, but the car looks like he already had it working because it has wires running through from back of head unit to boot, and the earth and big lives.
    I have removed the speakers and amp in boot and he has cut the wires off where he had obviously had it wired up to something??
     
     

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    he may have had anouther, aftermarket amp in the boot and by passed the HK,

    got a pic of the wires you are left with?
     
     

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    Sorry mate I'll post up a photo tomorrow!
     
     

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    If you can make out what these are mate :::




    Cheers!!
     
     

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    to be honest it looks like he has chopped out the HK amp,

    i personally like to installs a little easier to put back to stock,

    You need to identify what wires have been chopped/disconnected and where they go

    then you can start to work out what you need to do to get your aftermarket HU working, either way you are going to need to by-pass the HK amp, by using an aftermarket amp or wireing the speakers directly to your HU

    quickest simplest way i can see to overcome this,

    take you aftermarket HU on the iso adapter snip all four speaker wires, front left, FR, RR, RL they are in pairs so 8 wires,

    get some new speaker wire enough to go to the HK amp, crim it onto the wires you just sniped that comes from your HU,

    So now you have 4 pairs of speaker wires in your boot, you need to id which speaker wire is for what speaker on the output side of the HK amp, and again you need to snip them, crim the correct new speaker wire to the corrisponding wireing in the car

    So now you have aftermarket HU, goes in to iso adapter speaker outputs go into new wireing, run to the boot, new wireing connected to car wireing that go to speakers

    so it should now work
     
     

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    So in order for the speakers to work i will have to run them to the amp in the boot.

    Also my amp i have in the boot is a mutant 1600w amp and sub, here is a pic:



    Cheers for the help its killing me not having music!!
     
     

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