Brake-Radio problem - Ford Mustang Forum
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post #1 of 3 (permalink) Old 08-04-2015 Thread Starter
superj's Avatar
Joined: Aug 2009
Location: Phoenix
Posts: 6
Brake-Radio problem


I have a very strange issue with my 2005 GT / manual Transmission.

Just as I started off again, I experienced a very strange thing.
When I release the brake, a loud 'tick' comes out of the RH upper loudspeaker (original Shaker 500 installed, no mods).

This is only, if the radio is turned on, when it's off, the noise doesn't come up.
So somehow it is related to the Radio, but I cannot understand how this comes up when the brake pedal is released.

Any ideas?

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post #2 of 3 (permalink) Old 08-04-2015
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Joined: Jan 2015
Location: North Carolina
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My first and really only guess would be a lose wire. Only I would think it would have the issue at other times like turning and accelerating as well.

Current Garage
(11.)2012 GT500 silver with red stripe, SVT performance package, and Recaro seats.
2018 Honda Civic Type R
Past Mustangs in order and color of text.
(1.)2000, (2.)2004, (3.)2006GT/Auto traded for (4.)2006GT/Manual, (5.)1996, (6.)2011GT, (7.)2003GT, (8.)2006GT, (9)2013 Boss 302, and (10.) 2002GT
(I have owned a few non Mustang cars over the years as well, but always try to have a Mustang with it or come quickly back to a Mustang!)
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post #3 of 3 (permalink) Old 08-04-2015
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It's also possible there's a problem with the SJB (Smart Junction Box), which controls the radio and stop lamp switch circuits.
2005-2007 Ford Mustang Smart Junction Fuse Box Problems Symptoms and Cures Including Schematics. Auto Parts Cheaper Blog

Check if the passenger's side carpet is wet or damp. If it is, then water is leaking into the interior and it may have dripped onto the SJB causing a short.
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