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Where is Stoplight Circuit Normally Found When Installing Brake Controller in Vehicle  

Updated 12/28/2017 | Published 12/27/2017

Question:

How to find the brake stop switch wire.

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Expert Reply:

You'll need a circuit tester like part # PTW2993 so that you can test the wiring of the stoplight switch till you find the wire that carries voltage only when the brake are applied and none when released. To find that you'll need to get under the dash and find the switch that is connected to the brake pedal.

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Jameson C

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