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How To Install a Raxiom 3rd Brake Light Flasher on Your 2005-2014 Mustang

Installation Time

1 hours

American Muscle
Shop Parts in this Guide

1994-2014

Step 1: 


Remove or fold down the trunk lid appearance panel.


Step 2:


Locate the 3rd brake light wiring harness.


1999-2004:
Black
Green


2005-2009:
White/Blue
Black


2010-2014:
Black/white
Yellow/ Gray


Step 3:


Cut the 3rd brake light wires so that you have enough room to attach the Flasher wires with butt connectors. The solid wires coming off the 
module will connect to the chassis side of the wiring harness. The dashed wires coming off the module will connect to the brake light wires. 



2015

Step 1:


Gently pull down on the rear head liner and unclip the 3rd brake like harness.


Step 2:


Locate 3rd Brake light wiring harness.


2015:
Black/Purple
Yellow/Gray


Step 3:
Disconnect the harness wiring harness so that you can make you connections, there is enough 
slack in the chassis harness if you pop it out of the clip holding it to the roof. 


Step 4:


Splice in the module. **NOTE: the 2 wires are wrapped in a fabric tape, and shielding wire. You have limited space to splice it in.


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