What is the most common reason for check engine light to come on for 2007 ford mustang gt

" dim headlights "? None of your lights should be 'dim'. You have 4 lights.

Side Lights.
Daytime Running Lights (DRL)
Low Beam Headlights.
High Beam Headlights.

Here are the fuses, check fuse 5 and D although they covers more items than lights. Your best bet is to find a good local auto-electrician.

1994-1998 Ford Mustang Fuse Box Diagram

https://knigaproavto.ru > ... > Ford > Mustang

17 Oct 2019 - Fuse Panel Diagram Ford Mustang Mk.4 engine: 3.8L, 4.6L, 4.9L, 5.0L and 5.8L (1994, 1995, 1996, 1997, 1998)

More here

https://www.google.com/search?q=1995+ford+mustang+gt+v8+low+beam+headlight+not+working

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mages for 4.6 Engine valve train in 2008 Ford Mustang Gt


More images for 4.6 Engine valve train in 2008 Ford Mustang Gt

2005-2009 Mustang Cylinder Heads & Valvetrain ...

www.americanmuscle.com/mustang-valvetrain-0508.html
They help your motor breathe better and also make sure your Mustang gives top-notch throttle response. ... 2005, 2006, 2007, 2008, 2009 Mustangs; V6, GT, Bullitt, Shelby GT500, ... 2005-2009 Mustang GT Cylinder Heads & Valvetrain Components ... (6).Ford Racing SOHC 3V 4.6L Head Changing Kit (05-10 GT) $76.00.

Mustang Camshaft Facts & Technical Information ...

www.americanmuscle.com/camshaft-tech-guide.html

Re;2007 mustang will turn over and even start but dies out immediately a if you killed the ignition. Engine cranks & starts,stalls w/key released to 'run' position ??

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Open trunk, pull back any trim & if you don't see
the lamp socket, you will see nuts to remove the
tail light housing from the body

did you have an amp test on the altonator? should be running about 14 plus volts with the car running then check it with the lights on if you can

Here: Ford Mustang Fuse box Years of production 2005 2006 2007 2008 2009 2010...

This sounds like you have a bad alternator. Even though it is new it appears to be bad.

where does the vehicle sit when this happens is it a residential area or near a radio station or someones garage or even there cb beam what im trying to say is there maybe some bleed over from something that puts out strong signal ive played around myself with my cb and had a kicker/booster that would come across peoples tv and through pa systems like hardees drive up they where not happy with me anyway you see what i am saying.

What engine ???? 8th digit of the vin?

they forgot to reset your light take it back and they will reset the light for you..