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Where is the Brake Switch Wire on a 2014 GMC Savana Van to Install a Brake Controller


Looking for wire to hookup from brake switch.


Expert Reply:

I can tell you were to access the correct brake switch wire to install a brake controller on your 2014 GMC Savana Van. You will need to access the wire behind the BCM (body control module) located behind the dash on the passenger's side of the vehicle.

There should be a brown connector coming out of the back of the BCM. At that connector you should find a light blue/white wire. This is the wire that carriers the dedicated brake light signal. Use a circuit tester such as # 40376 to confirm that it only has power when the brake pedal is pressed. I have also included a picture showing the wire.

If you do not already have a brake controller I recommend the P2 # 90885 because it is easy to set up and use and it is reliable.

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