Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - View Single Post - Bad Thump From Speakers at Engine Start
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Old 03-15-2013, 10:14 PM   #3
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Join Date: Nov 2012
Fan#: 106774
Location: Greenwood, LA
What I Drive: 2013 Ruby Red Ford Focus SE

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Thanks for the input and I too was thinking along this line also so I went back and checked all the ground points and even doubled up on the battery and chassis ground with no luck, thanks thou I would recommend to anyone installing an amp with RCA auto signal in the 2012 and after stock ford head units check before buying due to a feature in these heads of a constant signal source probly due to the ford synch systems It some how turns the amp on even with the Head unit off when the doors are opened including the hood and hatch back door are opened.
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