Wiring Location to Connect a Brake Controller to a 2017 GMC Acadia

Question

Question:

HAVE A UNIT WITH NO FACTORY UNDER DASH PLUG. HAS BLUS/BLK/AND GROUND IN A SET OF LOOSE WIRES UNDER DASH BEHIND GAS PEDAL SKIRTING. ONE LEAD WHITE/BLACK STRIPE WITH IT HAS NO FUNCTION. ALL FUSES AND RELAYS IN. WHERE CAN I ACCESS A STOP LIGHT WIRE.

asked by: MATT

0

Expert Reply:

The stop light switch wiring is located behind your brake pedal on your 2017 GMC Acadia. See the picture for a visual.

If you are having trouble locating the wire you can use a Circuit Tester # PTW2993 to find out which wire sends a signal when the brake is depressed. You can use a Quick Splice Wire Connector # SWC501746-1 or a Butt Connector # DW05714 to connect the red wire from your brake controller to the stop light switch wire on your Acadia.

expert reply by: Jon G

0

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Answer 1

It sounds like you are definitely on the right track. On a 2014 GMC Acadia The plug for the wiring harness #C56245 should be behind a trim panel behind the passenger side wheel. Sometimes locating these plugs can be tricky, and vehicle manufacturers…

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Answer 2

The Tekonsha Prodigy RF Wireless Trailer Brake Controller #TK94FR must be mounted to the trailer in a certain way in order to function correctly. It cannot be connected to the tow vehicle. A better option for you is the new Curt Echo Wireless Trailer…

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Answer 3

Thanks for the photo and good information! The Curt Spectrum Trailer Brake Controller #C51170 doesn't come with a universal pigtail but that can be acquired with part #C51515. Then all you need to do is match the following wires from the pigtail…

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Answer 4

Hey Martin, it looks like the Curt Spectrum #C51170 is a universal part so it actually does not have a custom wiring harness. This brake controller is compatible with up to 4 axles, is assembled in the USA, and is compatible with ABS brakes, cruise…

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Answer 5

It could be a tow package fuse on the vehicle. Use the owners manual to find the locations of fuses/relays related to the tow package wiring to check them and replace as needed. If the issue is not a fuse or relay then you can test the vehicle side…

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Answer 6

All the brake controller needs to sense a trailer connection so that you can test it is a slight amperage draw on the output circuit. For that you can use a circuit tester like the part #PTW2993 with one pin grounded and the other on the output pin.…

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Answer 7

Hey Lessa. I've got a puck light that's pretty close to your current one. It's the Warm White Glantastic item #328-K-58L34P9. This is a 4-1/4" diameter x 1" deep puck light that fits a 3-3/8" diameter x 3/4" cutout.…

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Answer 8

Hey Bob, I am not sure what video you are referring to but if it's trailer wiring we typically are using the part #PTW2993 to test the circuits of the trailer to determine the function of each wire. This has a hook and probe which makes it easy…

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Answer 9

Hey Kevin, congrats on the upgrade and thanks for the pics! The D-Ring Bumper Mounts item #RM-035-1 are definitely going to be the best option. They are compatible with the Nighthawk All-Terrain Tow Bar item #RM-676 and will attach to the circle on…

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Answer 10

Your brake lights and turn signals for each side are on one circuit. The left side turn signal and brake light is generally the yellow wire going into your trailer connector. The first thing to do is check the fuses on your tow vehicle. Next, inspect…

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Answer 11

It sounds like there is a short somewhere along the wiring of your vehicle or trailer that is causing a fuse to blow every time you connect. The first thing I recommend doing is disconnecting the trailer and using a circuit tester like #PTW2993 to…

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Answer 12

I can certainly help you with that. Since the Curt T-Connector Vehicle Wiring Harness, part #C55384 is a 4-way connector the four functions will be Yellow for the left turn and brake, Green is for right turn and brake, Brown is for running lights,…

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Wiring Location to Connect a Brake Controller to a 2017 GMC Acadia

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