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Old 06-23-2011, 11:14 PM   #1
IIMonoxideII
 
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Vehicle: 2007 Ford Mustang
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Default Tail Light Problem

I had some bulbs go out in the tail lights of my 2007 V6 Classic so I bought 4057 Bulbs and replaced them. All seemed to work fine except the innermost light on both sides. It comes on when I turn my headlights on but it won't come on when I press the breaks. The outer two on both sides are completely fine and light up with turn signals, emergency lights, and brakes. My problem is those two middle lights that are right above the reverse lights. If anyone has a suggestion as to what I should do please post and be as detailed as possible. I'm learning so keep it as simple as you can. Thanks
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Old 06-23-2011, 11:22 PM   #2
aaquib1992
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Sounds like the car is fine, those "inner" or 3rd strip of light bars are not supposed to light up during braking. Only the 2 outer most on each side will brighten for the brake sequence, although all 3 on each side will illuminate for parking/night driving lights.

Hope I didn't confuse you, just let us know if you need any further clarification.

If you really want them to light up you could always get a sequential taillight harness. Beauty of the mustang is that anything you want, you can add due to our HUGE aftermarket and customization capacity.

Enjoy the car! And welcome to the forum.
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Old 06-23-2011, 11:50 PM   #3
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Okay then! LOL! I thought for some reason they were all supposed to light up... Thank you very much for the information and for welcoming me to the forum!
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Old 06-24-2011, 11:14 AM   #4
157dB
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The are suppost to illuminate with sequential taillights...
Not OEM.
The center most bulbs are not 4057 bulbs but 4157 instead.
Actually 3057 and 3157 is what the owners manual calls for.
The increased load of the 4057s might damage the SJB.
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Last edited by 157dB; 06-25-2011 at 08:53 AM.
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Old 06-24-2011, 02:06 PM   #5
Nice Pony
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Quote:
Originally Posted by 157dB View Post
The are suppost to illuminate with sequential taillights...
Not OEM.
The center most bulbs are not 4057 bulbs but 4157 instead.
Actually 3057 and 3257 is what the owners manual calls for.
The increased load of the 4057s might damage the SJB.
Interesting. My owners manual state 3057K or 4057K for the tail lights regardless of position.

Also try to find bulbs that have LL in the part number. That is for long lasting and they really to last much longer then the stock bulbs.
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Old 06-24-2011, 03:36 PM   #6
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+1
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Old 06-24-2011, 04:45 PM   #7
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Quote:
Originally Posted by 157dB View Post
The center most bulbs are not 4057 bulbs but 4157 instead.
Actually 3057 and 3257 is what the owners manual calls for.
FYI: The 2005, 2006, 2007, 2008 and 2009 owners manuals I have all show 3057K or 4057K for taillights. Not sure why yours would be different.
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Old 06-24-2011, 04:45 PM
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