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aftermarket stereo wiring help

Discussion in '308/328' started by Veleno, Dec 22, 2010.

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  1. Veleno

    Veleno Rookie

    Jan 10, 2010
    25
    #1 Veleno, Dec 22, 2010
    Does anyone know where I can tap in to get power for the HU I'm installing? I need a constant (red on harness) and a switched (yellow on harness) power.

    I did do a search but nothing stating where I can tap for power.

    Thanks for any help guys and Happy Holidays!
     
  2. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    13,566
    San Carlos, CA
    Full Name:
    Mitchell Le
    #2 yelcab, Dec 22, 2010
    what car? A Toyota, Honda, Ferrari, which model?
     
  3. speedy

    speedy Formula Junior

    Oct 18, 2005
    625
    Plano, TX
    Full Name:
    James Gardner
    #3 speedy, Dec 22, 2010
    I chose not to tap into the original wiring (call me crazy)... I ran a large stereo amp power wire directly from my battery, through the firewall to a mounted dual row barrier strip on the right side of the fuse panel (308QV). It allowed me to tap into direct power when I installed my updated door locks and window accellerators. I slept better at night knowing that I wasn't jacking with the old factory stuff.

    Good luck
     
  4. BigTex

    BigTex Seven Time F1 World Champ
    Owner Rossa Subscribed

    Dec 6, 2002
    79,380
    Houston, Texas
    Full Name:
    Bubba
    #4 BigTex, Dec 22, 2010
    With fusing I'm hoping......
     
  5. speedy

    speedy Formula Junior

    Oct 18, 2005
    625
    Plano, TX
    Full Name:
    James Gardner
    #5 speedy, Dec 22, 2010
    Oh yes indeed... The Spal door lock kit came with an in-line fuse.


    Also I should edit my original post. The firewall is behind the seats... It should be the front bulkhead I suppose.... :)
     
  6. CliffBeer

    CliffBeer Formula 3

    Apr 3, 2005
    2,198
    Seattle, Washington
    Full Name:
    Cliff
    #6 CliffBeer, Dec 22, 2010
    Go ahead and do like everyone else - tap into the power supply for the clock for the constant +12 and the power to the wipers for the switched +12.......
     
  7. Veleno

    Veleno Rookie

    Jan 10, 2010
    25
    #7 Veleno, Dec 22, 2010
    Thanks for the help guys.

    This is for an '84 308.
     
  8. Birdman

    Birdman F1 Veteran

    Jun 20, 2003
    6,689
    North shore, MA
    Full Name:
    THE Birdman
    #8 Birdman, Dec 22, 2010
    The info is in the owners manual schematic. I would humbly suggest you splurge on a set of Paul's excellent schematics

    http://www.ferrari308gtbi.com/

    Very easy to read. No affiliation. Well, except that I like them.

    Birdman
     
  9. Paul_308

    Paul_308 Formula 3

    Mar 12, 2004
    2,345
    #9 Paul_308, Dec 22, 2010
    I grew up on real car radios. Whenever I needed gas money I'd stop at a used car lot to repair their defunct car radios at fixed $5 each using vibrators I rebuilt by filing the contacts. So, what is an HU?
     
  10. flyngti

    flyngti Formula 3

    Jul 16, 2009
    1,246
    Snohomish, WA
    Full Name:
    Eric L
    #10 flyngti, Dec 22, 2010
    Just a guess, but I think Head Unit.
     
  11. robertgarven

    robertgarven F1 Veteran
    Owner

    Feb 24, 2002
    5,294
    Ventura, California
    Full Name:
    Robert Garven
    #11 robertgarven, Dec 22, 2010
    Oh my.... I spent weeks trying to get a small subwoofer wired under my seat. Finally gave up but have a Kenwwood HU that takes a USB and sounds great until it gets warm then starts distorting. I have given up for now. But when I get the car running again!!!

    BW I tapped into the top side of my rear window defroster. On the GT4 the stereo is always on



    Rob
     
  12. Paul_308

    Paul_308 Formula 3

    Mar 12, 2004
    2,345
    #12 Paul_308, Dec 23, 2010
    Last edited: Dec 23, 2010
    Rob, 1974-1985, the rear window heater is supposed to use left fuse 4 which is powered by the ignition key 'accessories' (+'run') position (as do as the a/c and heater fans on fuse 5).

    das ist sehr interessant - methinks you have never turned your key off, just sit there listening to the radio.


    Small woofers like 8" go fit nicely into the passenger footwell.
     

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