Upgrading 850 Radio with SC 901 HU

Discussion in 'Volvo 850' started by Fred, Feb 18, 2007.

  1. Fred

    Fred Guest

    I need help!!

    Recently I decided to upgrade the radio in my '96 850 GLT. I got the
    SC 901 HU due to good reviews i read about it online. I also got a
    400watt 4 way channel AMP. My challenege is how to hook the SC 901 to
    the amplifier. Can somebody who has done a similar upgrade help me?

    Thank You!

    Fred, Feb 18, 2007
  2. Fred

    Zeke Guest

    Hi Frederick,

    If you already have the radio hooked up to the car, the rest should be
    easy. If you don't, just give yourself a break, and get the wiring
    harness from a reputable source. This car may require a converter unit
    as well. It is still worth it. These cars can be nightmarish to re-
    wire. If you already have the radio installed and functioning
    properly, the rest really is pretty easy. There should be RCA type
    connectors on the rear panel of your stereo, These are line level
    outputs. These go to the amplifier's input section. DO NOT use the
    regular outputs. These are powered and if you use them they will most
    likely fry your amp, stereo, or speakers. On the wiring harness that
    plugs into your stereo, there is a remote wire. It is most likely
    blue. It should be extended, and connects to the remote terminal on
    your amp. It switches your amp on and off in unison with your stereo.
    The positive connection on the amp connects to the positive battery
    terminal, and the ground terminal is grounded to the body of the car.
    Speakers will probably need to be rewired to the amp outputs.

    I hope that this helps out.

    Good luck,
    Zeke, Feb 18, 2007
  3. Regarding the 901 HU do you know if it requires an amp hookup/ could it
    replace any of the SC Premium head units that came in those cars such as the
    SC-811 or SC-815.
    Does it require an external amp?
    I'd like to replace my SC 811 with a head unit with a CD The 901 has a 3
    disk cartridge and from I understand is a good head unit as far as sound

    B. Franklin
    Bernie Franklin, Feb 19, 2007
  4. Fred

    Mike F Guest

    The SC901 (and SC900) do not have an internal amp, except for the single
    channel unit that powers the center speaker. There are no RCA jacks on
    the rear, the outputs are contained in the larger diameter of the 2 DIN
    type plugs on the rear.

    If you want to make a cable: Looking at the back of the head unit, and
    assuming that the "missing" pin is at 12
    o'clock, then 2 o'clock is left front, 4 is right front, 6 is right
    rear, 8 is speaker common, 10 is left rear. The centre pin is the +12 V
    amp trigger. This is a standard plug, and is available from electronics
    supply stores.

    Mike F.
    Thornhill (near Toronto), Ont.

    Replace tt with t (twice!) and remove parentheses to email me directly.
    (But I check the newsgroup more often than this email address.)
    Mike F, Feb 21, 2007
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