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Ford Mustang Front Side Marker Light Bulb Replacement Guide
How to change a burnt out front side marker light bulb in the bumper of a revised 5th generation 2010 to 2014 Mustang.

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2012 Mustang Front Side Marker
Under Bumper Splash Shield
Remove 7mm Screw
This automotive maintenance tutorial was specifically written to assist owners of the updated fifth generation (2010, 2011, 2012, 2013 & 2014) Ford Mustang in changing a burnt out front side marker light bulb.

Owners of the earlier 5th generation Mustang from 2005 to 2009 and possibly the 4th generation 1994 to 2004 models with similar front side marker light bulb housings may also find these DIY instructions to be helpful.

A replacement bulb for the 2010 to 2014 Mustang models is part number 194 from manufacturers such as Sylvania, GE, Philips, Eiko and PIAA.

If you would like to have brighter side marker lights, choose some compatible 194 LED bulbs.

The 2005 to 2009 Mustangs use part number 2825 for the front side marker.

The tools needed to replace the bulbs include a 7mm socket, and a 1/4" drive ratchet.

7mm Screw Removed
Remove 2nd 7mm Screw
Pull Down Plastic Panel
Move to the front corner of the vehicle with the burnt out side marker bulb.

Look under the car and locate the two screws that hold the corner of the black plastic under bumper cover in place.

Remove the screws by turning them counter clockwise with the 7mm socket and ratcheting wrench.

Gently pull down the plastic panel to access the bulb housing.

Side Marker Bulb Housing
1/4 Turn Counter Clockwise
Remove Bulb Socket
Rotate the light grey bulb socket 1/4 turn counter clockwise and pull it straight out of the housing.

Pull the old bulb straight out of the socket.


Pull Out Old # 194 Bulb
Push In New Bulb
1/4 Turn Clockwise - Lock
Push in a new number 194 bulb straight in to the socket.

You may also use any other miniature wedge base bulbs such as the # 158, 168, W5W, 2825 or a compatible LED unit.

Re-insert the socket in to the housing and rotate it 1/4 turn clockwise to secure it in place.

Replace Under Bumper Cover
Replace 7mm Screws
Test New Light Bulb
Push the plastic under bumper cover back in to place and replace the two 7mm screws by turning them clockwise until they are snug.

Test the new front side marker light bulb by pressing the "Unlock" button on the key fob.

For more, check out my other Ford Mustang Repair & Maintenance Guides.

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