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  1. #1
    TEAM Member aleXXXps's Avatar
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    Default Adding an amp an subs to stock radio

    Today I bought a 2010 ford focus SE. I have my amp and subs from my previous grand prix, which I wired to an aftermarket head unit. I really like the focus stock unit, and don't want to mess up or modify my new car much. Can I wire the amp and subs up pretty easily to the stock unit without removing it? Also, what does audio pre wiring mean because my list of features for the car say that. I the single cd/mp3 player without sync but have the aux jack. I like the stock sound, but am so used to my kicker subs in my car. Also, if I cannot use my subs can I change the speakers pretty easily and throw some pioneers in the rear? I'm not a total noob with stereos, just am very cautious as this is my very first new car :-) thanks!

  2. #2
    Ray
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    Default Re: Adding an amp an subs to stock radio

    Easy as cake man. Just get a line output converter, tap into the speaker wires, and hook up the amp cables (power, ground, etc). Remote can be off anything off the ignition switch / switched 12v+
    I used to have a focus like you. Then I took an arrow to the knee.
    Intelligence is largely at the mercy of self-control

    Roadtrippin | CART | MCA

  3. #3
    TEAM Member aleXXXps's Avatar
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    Default Re: Adding an amp an subs to stock radio

    Hmm is it hard to wire the amp power cable from the battery to the trunk on the 2010 focus? With my last 2 cars this was always the hardest part and I Always ended up breaking something or ghetto riggin it. There's no source of power already back there, right?

  4. #4
    Ray
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    Default Re: Adding an amp an subs to stock radio

    no, no source. It's just as easy as connecting the main wire to the battery (fused) and running it thru the firewall (grommeted) then under the carpet, and into the trunk. Basically every car is pretty similar that i've worked on. Focuses are actually some of the harder ones just do to clutter on the firewall.
    I used to have a focus like you. Then I took an arrow to the knee.
    Intelligence is largely at the mercy of self-control

    Roadtrippin | CART | MCA

  5. #5
    TEAM Member aleXXXps's Avatar
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    Default Re: Adding an amp an subs to stock radio

    Where is the firewall located? And how likely am I to hook this up without messing up my new car or breaking any plastic parts, etc?

  6. #6
    Ray
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    Default Re: Adding an amp an subs to stock radio

    The firewall is the wall between the engine and cabin.

    Take your time - most panels just pop off - if you have concerns, hire someone. where are you located? There might be a jetter close that can help you out.
    I used to have a focus like you. Then I took an arrow to the knee.
    Intelligence is largely at the mercy of self-control

    Roadtrippin | CART | MCA

  7. #7
    Senior TEAM Member focusonfocus's Avatar
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    Default Re: Adding an amp an subs to stock radio

    if you have high level input on the amp, you can easily tap to speaker wires..
    if there is only low level(rca), you will need to get line out converter and tap to speaker wires..


    if you are worrying about messing up, i would recommend take it to pro..
    you don't want drill into brake booster..
    LOOKING FOR HAWKEYES STI(WORLD RALLY BLUE)

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  8. #8
    TEAM Member ROC585's Avatar
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    Default Re: Adding an amp an subs to stock radio

    Quote Originally Posted by focusonfocus View Post

    if you are worrying about messing up, i would recommend take it to pro..
    you don't want drill into brake booster..

    this is the best advice anyone can give to a prospective DIYer. if you have any doubts, just pay someone as it will be cheaper than replacing whatever vital car part gets damaged.

    imost shops will install an amp for around 60 bucks. you could then do the LOC yourself, or expect to pay another 40 or so if you aren't comfortable with that.
    www.powerbassusa.com
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    if you take the internet seriously, get help ASAP.

  9. #9
    TEAM Member Focusin_'s Avatar
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    Default Re: Adding an amp an subs to stock radio

    Good luck with this post any questions that you have.

  10. #10
    Rookie ThaKillerKlown's Avatar
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    Default Re: Adding an amp an subs to stock radio

    I am about to run my wires in my 08, I too looked under the hood today and there is A LOT of clutter on the firewall. I'm gonna start the process when I get in from work tomorrow afternoon. If I find a good place to bring the wire into the car before you do, I'll post pics for you.

    [EDIT] I think I may have found a location where the clutch pedal would have been located. There is a plastic "plug" there that I plan to drill through. I'll let you know!
    Last edited by ThaKillerKlown; Mar 14, 2010 at 6:05 PM.
    2008 Focus SE - Purchased 12-22-2009 - Vapor Silver Metallic - 17" SES Rims - 5% tint all around - Two 12" Rockford Fosgate Subs pushed by 1400 watts!

  11. #11
    TEAM Member aleXXXps's Avatar
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    Default Re: Adding an amp an subs to stock radio

    Thanks, that would be awesome if you can post some pics! The system I am hooking in is nothing amazing, it's a 2400watt Lanzar Vibe amp with two 12inch kicker comp cvr's, 800watts apiece. I just want to add a little more bump and was perfectly fine with it in my Grand Prix. I'm on a budget, can only spend maybe $100 right now. I called a few shops, best quote I can get is $80 dollars. I'm in Chicago. If anyone knows some good shops that can do it at a better price, let me know!

  12. #12
    TEAM Member ROC585's Avatar
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    Default Re: Adding an amp an subs to stock radio

    80 bucks, does that include the LOC install? if so that's a good price. i would first find out how good they are though.
    www.powerbassusa.com
    www.autoexpressions.net

    if you take the internet seriously, get help ASAP.

  13. #13
    Rookie ThaKillerKlown's Avatar
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    Default Re: Adding an amp an subs to stock radio

    I ran my power wire through the plastic blank that the covered where my clutch would have been located. I'll upload a few pics for you.

    These are the holes left once the cover is removed from under the dash.


    These are the holes looking from under the hood.


    I marked the panel from the inside, pulled it and drilled the hole.




    Here it is reinstalled, with the hole drilled, grommet in place, and the wire running through it.


    I pulled the battery and lifted the fuse box to have more access to the panel.


    Here is the completed panel from the inside...


    Completed from underhood...


    2008 Focus SE - Purchased 12-22-2009 - Vapor Silver Metallic - 17" SES Rims - 5% tint all around - Two 12" Rockford Fosgate Subs pushed by 1400 watts!

  14. #14
    TEAM Member ROC585's Avatar
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    Default Re: Adding an amp an subs to stock radio

    ^simply because of the way you routed that wire, i would have fused closer. and honestly, i would have routed it differently in the engine compartment.
    www.powerbassusa.com
    www.autoexpressions.net

    if you take the internet seriously, get help ASAP.

  15. #15
    TEAM Member 09focus's Avatar
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    Default Re: Adding an amp an subs to stock radio

    Im am buying 2 10" 500 watt RMS Infinity's with a 1000w Infinity amp tomorrow
    Getting the line out converter and a 4 gauge amp install kit.

    Since my car has the factory sub and amp in the trunk can I tap into the speaker wire that powers the factory amp? and use that for the line out converter to power the aftermarket amp?
    2009 Ingot Silver Sedan
    FSWerks Stealth Exhaust & 4-1 Header.
    Massive Speed System Strut Tower Bar.
    FRPP Suspension.
    Tinted Tails & Color Matched Vinyl Eyelids.


 
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