Ford Mustang Forum - View Single Post - Aftermarket Headunit w/ shaker 500 system
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post #4 of (permalink) Old 01-06-2014
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Joined: Jul 2010
Location: Fort Worth
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you will need the adaptor with the red and white rca plugs and blue/white amp turn on wires. its a metra product. I just installed a headunit in my 05. my door subs weren't working so I did some research on here and the red or white rca plug needs to be connected to your rear or sub rca output on the back of your headunit. also make sure that your sub option is turned on thru the audio menu. test to make sure it works prior to install. hope this helps. I ordered all my install stuff from crutchfield. the harnesses that you can buy from the mart or big box stores does not come with the additional adaptor. good luck

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