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General Discussion
brake controller question
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<blockquote data-quote="zukkev" data-source="post: 1226299" data-attributes="member: 17121"><p>Sounds to me like the controller is fried....yes the black wire on the controller is B+, white wire is GND, red wire is 'BRAKE SENSE'(signal the controller needs to see the truck's brakes are being applied), and finally the blue wire is the 'TRAILER BRAKE OUTPUT' (signal going back to the trailer when the brakes are applied)---there should not be power there, unless the brakes are being applied...now, if you test this circuit with a test light, hook the clip to a good ground, and backprobe the blue wire coming out of the controller.The light bulb should dimly light up only when either the truck brakes are applied, or using the manual lever on the controller to apply the trailer brakes...</p></blockquote><p></p>
[QUOTE="zukkev, post: 1226299, member: 17121"] Sounds to me like the controller is fried....yes the black wire on the controller is B+, white wire is GND, red wire is 'BRAKE SENSE'(signal the controller needs to see the truck's brakes are being applied), and finally the blue wire is the 'TRAILER BRAKE OUTPUT' (signal going back to the trailer when the brakes are applied)---there should not be power there, unless the brakes are being applied...now, if you test this circuit with a test light, hook the clip to a good ground, and backprobe the blue wire coming out of the controller.The light bulb should dimly light up only when either the truck brakes are applied, or using the manual lever on the controller to apply the trailer brakes... [/QUOTE]
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