Curt Venturer NEXT Trailer Brake Controller - 1-3 Axles - Time Delayed
Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In

Curt Venturer NEXT Trailer Brake Controller - 1-3 Axles - Time Delayed
part number: C74VV

A simple LED display and a pinch-trigger manual override make this time-delayed brake controller easy to read and easy to use. Installation is quick and simple with no mounting restrictions. Activates brakes with a preset intensity.

Features:

• Brake controller activates trailer brakes with preset intensity
• Adjustable power output control lets you select the amount of braking force
  • Rocker switches located on left front of module for easy access
• 10 Gain settings and 9 load settings allow you to adapt to various driving conditions
  • Select a higher setting for harder braking and lower for more gradual braking
• Pinch-trigger manual override is within easy reach for controlling trailer sway or stopping in emergencies
• Simple LED display shows the amount of power output
  • Self-diagnostics monitor trailer connection and check for shorts
• LCD display shows power adjustments in 1.0 increments
  • Brightness is adjustable for optimal visibility
• Auto-sleep mode prevents battery drain after 5 minutes of idle time
• Quick and easy installation with no mounting restrictions
  • No need to mount level - install anywhere at any angle
  • Included mounting bracket and hardware designed to hold brake controller flush against the dash
  • Plug-in, vehicle-specific brake control adapter (sold separately) available for select vehicles to reduce installation time

Specs:

• Application: trailers with up to 3 axles (6 brake assemblies)
  • Compatible with low-volt, PWM, ABS, cruise control, and electric-over-hydraulic trailer brakes
• Dimensions: 4" long x 3-1/8" wide x 1" thick
• Limited lifetime warranty

Gain Adjustment

Gain control lets you set the maximum amount of power that will be applied to your trailer's brakes, adjusting in increments of 1. How much braking output you need is determined by the weight of your trailer; a heavier trailer will need more power to bring it to a stop. You want to go as high as you can without the trailer brakes locking up. Typically, the gain is only readjusted when you experience changing road conditions or if the weight of your trailer changes. To get more power to your brakes, press the left-hand upper rocker switch. To decrease the gain, press the lower switch. When you make your adjustment, the gain setting will show on the LED screen for 5 seconds as a series of bars and then go into sleep mode to reduce drain on the battery.

Load Control

Once you have the gain set, you can fine-tune your braking by adjusting the load control on a scale of 1 to 9. This controls the aggressiveness of your trailer's braking, meaning how quickly the brakes reach the maximum braking level. Load control can get the braking power to your trailer faster and with more intensity so that it doesn't push your tow vehicle forward. If your vehicle takes too long to come to a stop, increase the setting by pressing the right-hand upper rocker switch. If it stops too abruptly, decrease the setting by pressing the lower switch. You can alter the setting to suit your driving preferences or to improve handling based on changing road conditions or varied trailer loads.

Pinch-Trigger Manual Override

The Venturer comes with a easy-to-reach, pinch-trigger manual override, great for stopping sway or controlling your trailer's momentum in emergencies. To engage the manual override, just push in the trigger. This will activate the trailer's brakes and brake lights without you having to apply the brakes on your tow vehicle, perfect for limiting trailer movement while you're cruising.

LED Display

The LED display on the Venturer is large and easy to read at a glance. It will show you what setting the brake controller is on as well as give you information for troubleshooting. You can adjust the screen brightness or trigger night mode so it won't glare obnoxiously on your dash. Press the control button to cycle through the different modes, shown as a bar - keeping it simple.

Quick Installation

Because inertia plays no role in the functioning of this controller, you do not have to mount the unit at any particular angle. Your mounting options are limitless, so long as you can still easily access the controller and the manual override. The included bracket is designed to mount the brake controller flush to the dash so it takes up almost no space at all.

If your vehicle already has a plug-in brake controller wiring harness, just connect the unit to it. Otherwise, you will need to purchase a vehicle-specific wiring harness (sold separately) to plug into. If a harness is unavailable for your vehicle, hardwiring will be necessary.

Note: If a custom brake control wiring adapter is not available for your vehicle, one of the following will be required:

20-Amp circuit breaker (9506P - sold separately) for 2- to 4-brake applications

30-Amp circuit breaker (38630 - sold separately) for 6- to 8-brake applications

See also etrailer.com's exclusive 7- and 4-way brake control installation kit (ETBC7 - sold separately) if you don't already have a 7-way plug at the back of your vehicle.

Time-Delayed Braking

The Curt Venturer NEXT comes equipped with time-delayed braking. Every time you apply the brakes in your vehicle, a signal is sent - via the brake switch - to the Venturer. The controller then sends power out to your trailer brakes to activate them with an intensity set by you, at a rate determined by you. Both the amount of braking power (gain) and rate of application (load) can be adjusted to suit your preference, the road conditions, the type of trailer, and the weight of your load. To determine which levels are best for your application, test your towing setup and choose what feels right.

51116 Curt Venturer NEXT Time Based Trailer Brake Control - 1 to 3 Axles

Replaces Curt 51110

Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In
part number: C51451

Install your Curt electric trailer brake controller quickly and easily with this custom wiring adapter. Simply plug one end of the adapter into your controller and then plug the other end into the built-in port beneath your vehicle's dash.

Features:

• Plug-in wiring adapter allows for quick, simple installation of your electric trailer brake controller
• No cutting or splicing required
  • Custom connector end plugs into the built-in port beneath the dash of your vehicle
  • Other end plugs into the back of your electric brake controller
• Compatible with time-delayed and proportional brake controllers from Curt
  • Brake controller must have built-in plug for adapter to connect - will not work on controllers with pigtail wiring harnesses
• 2' Long, 12-gauge wires have protective covering to deter damage
• Limited 1-year warranty

Installation of Curt Brake Controller Adapter

To install your Curt electric brake controller, you need to connect the wiring of the controller to your vehicle. Certain auto manufacturers offer pre-wired options, typically known as tow packages, wherein wiring is run for you from the dash to the trailer connector on the back of your vehicle. When this is done, a port is installed at your dash so that you can easily plug in a brake controller.

This adapter plugs into the port on your vehicle's built-in brake control wiring harness. The port is located in the wiring panel underneath the dash, to the left of the steering column, near the emergency brake pedal.

No hardwiring is required to install this adapter. After you plug it into the factory port, you simply plug the other end of the adapter directly into your electric trailer brake controller. Because there are no wires to connect, installation is not permanent. You can unplug and remove your brake controller at any time to transfer it to another vehicle or securely stow it away.

51451 Curt Quick Plug Brake Control Adaptor Harness

California residents: click here

WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

Customer Satisfaction Score:

96% were satisfied with this product

4% of customers were not satisfied

• Alternate product found
• Defective
• Product did not meet expectations

Learn More

Customer Reviews

Curt Venturer NEXT Trailer Brake Controller - 1-3 Axles - Time Delayed - C74VV

Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In - C51451

Average Customer Rating:  4.8 out of 5 stars   (171 Customer Reviews)

Order: RelevanceNewestRating - High to LowRating - Low to High A simple LED display and a pinch-trigger manual override make this time-delayed brake controller easy to read and easy to use. Installation is quick and simple with no mounting restrictions. Activates brakes with a preset intensity. Install your Curt electric trailer brake controller quickly and easily with this custom wiring adapter. Simply plug one end of the adapter into your controller and then plug the other end into the built-in port beneath your vehicle's dash.

by: John 04/13/2024

Installed but not used with a trailer yet, easy instruction and appreciate the extra hardware for the installation.
Compact and not intrusive. Decided to use the adhesive tape included and taped under the dashboard L of the steering wheel.1766470

by: Jason 02/23/2024

Slimmer than most of the others. Easy install with the additional pigtail.1737390

by: R G02/17/2024

Thanks to etrailer foor the quick tutorial on where to plug it in at!1733694

by: David 05/05/2024

Fit perfect 1779632

by: Stephen 02/08/2024

2018 Chevrolet Silverado 1500

Perfect fit just plugs in…nothing to it! 1724500

by: Paul 02/26/2024

Delivered early. Was just what I wanted. 1738383

by: Gene 08/14/2023

Almost plug-n-go.The hardest part was where to put the controller !1646806

by: Bob B09/02/2014

Works great. Easy to follow online installation instructions for the wiring adapter - no problem!149512

Bob B.

9/2/2015

It works just fine, no problem at all.

by: Scott09/18/2022

I’m not sure if this part is good or not because it is part of a trailer brake choice that doesn’t work well. It is possible that this is the problem, but no one seems to be able to tell me what the problem is.1413744

by: Greg C.08/04/2015

2015 Chevrolet Silverado

After talking at length (at least 15 minutes) to the rep on the phone, I choose the Curt TriFlex controller for my 2015 Silverado. It happens to be the same unit sold on Chevy's website (but cheaper on etrailor). The sales person was awesome! She wanted to be sure I got the right one, not trying to upsell me on something I didn't need. Just as she promised, it plugged right in under the dash and I even used an existing screw to mount the bracket. A 15minute install!!! I will shop here again.216668

by: Wes05/21/2021

This thing does everything you could ask a trailer brake controller to do. Easy to install, easy to adjust, and performs flawlessly. And it is priced right where it should be.1046314

by: OEM09/24/2017

The screws for the bracket did not fit into the plastic bushings in the bracket. I have got hooked this up to a trailer with brakes, yet, but everything else seems to work, including the adapter for my Silvy1500. Note that this review bears no negativity on etrailer, but he manufacturer of the brake controller. Stop letting China manufacture our goods and get better product reviews. I have had good experiences with etrailer.com, they always ship fast and deliver quality installation guides. Kudos to them!435854

by: Tom F11/19/2020

2014 Chevrolet Silverado 1500

This is my first order with etrailer.com . The Curt Custom Wiring Adapter was as advertised and came on time as promised.
I had shopped around at All the big three auto parts places (except "NAD*) only to get the same answers: "You have to splice those things to mak'em work"....cost could be around $50-150 bucks" OR " We can't get the connectors from our company". This was not true.
Glad I found "etrailer.com . Thank You ALL. :)913822

by: Steven M05/18/2015

2015 Chevrolet Silverado 1500

The controller arrived quicker than expected along with the wiring harness. Installation, with your instruction, was painless and simple.

I choose to use velcro to mount my accessories, and in the pictures you can see this is a simple fast method. Plus, I can always remove it easily if need be.

Great product, great support, great prices.

Steve194071

by: ken j08/12/2017

After waiting for almost 1 month I finely received my order had too return one order that was not mine and had to wait until I got instructions on returning it. I have placed 3 different orders with etrailer but the last one was a mess, I don't known where you get the people that work in shipping but I think that a 4 year old could do a better job also when you have a complaint U wind up talking too four or five different persons and no one knows what you are talking about the only person that was of any help was Kim P thanks young lady419558

by: Danny08/13/2022

It was a very simple install. Only problem I had was getting my fat fingers in the right position to install the adapter harness into place. Took maybe 3 minutes though. Web site said it wasn't compatible with my truck, so I called. After a short wait Jesse came on. He was extremely patient as I explained my problem and had me fixed up in just a few minutes. The shipment arrived 2 days early wich is rare these days. Very pleased for sure.1371466

by: Ron H.08/02/2016

2014 GMC Sierra

I recieved this brake controller order on time. I installed it in my 2014 GMC Sierra in about 30 minutes. It work fantastic. I am extremely happy with my purchase from Etrailer.278706

by: Dale 09/17/2022

Just the right length, plug and play 1411578

by: Scott03/09/2018

2002 Chevrolet Silverado

Ok, I just found a package from you guys on my porch when I got home. I'd gotten an email today that said it'd been delivered, but I KNEW that was a mistake because I'd just ordered a couple days ago, paid ZERO for standard shipping, so was certain there was no way anything got here already. Get home, it's ALL there!!!!! It's all exactly what I ordered, and I'll be providing reviews of the stuff as I get it installed and used. But as for etrailer? Nothing but awesome!!!!!!!!! Amazing job. Now THAT'S customer service!483258

by: Ray04/09/2018

2015 GMC Sierra 1500

Excellent product, made hooking up my brake controller super easy and fast.
Fast and easy ordering from etrailer good people to deal with.
Thanks494590

Ray

4/9/2019

PRODUCT WORKS PERFECTLY. JUST WHAT THE DOCTOR ORDERED.

by: Ray L. 05/30/2015

Don't get much easier then this. The installation video was top notch , easy to follow and accurate. Thank you E-trailer 198831

Ray L.

5/29/2016

Great product great company!!!

by: Robert B.08/29/2017

I love this product. I have had many tow vehicles over the years. Wiring a brake controller always took a little time. This plug in device makes the job simple.
It and etrailer both deserve 5 stars.

RB426326

by: Rolland10/29/2016

2015 Chevrolet Silverado

The connector was part of a kit which included the trailer brake. Everything worked as advertised. Plug and play in my 2015 Silverado.311977

by: Tom12/18/2013

2014 Chevrolet Silverado

E-Trailer had exactly what I needed for my new model year vehicle that I couldn't find elsewhere. The product was accurately described and the installation manuals were available online which helped tremendously in making a purchasing decision. The order was placed on a Sunday and a shipping notification was received on the same day literally minutes after the order was placed. Item was received within 3 days...can't ask for better than that.

I have bookmarked this site for future business...very efficient.110389

by: Ernie E04/21/2015

Easy installation for brake controller only Con was there were no instructions provided as to where on the fuse block to plug it in. Had to research website for info. Mirrors fit perfect and allow to see rear of 26 ft trailer for up coming traffic187206

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Ask the Experts about this Trailer Brake Controller
Do you have a question about this Trailer Brake Controller?

• Can Curt Venturer Brake Controller Install in 1998 Jeep Grand Cherokee
  
• Yes, the Curt Venturer part # C74VV can be used on your 1998 Jeep Grand Cherokee with a factory 7-way. Next, for a wiring kit to install the brake controller to the 7-way you would want the Wiring Kit for 2 and 4 Brake Electric Brake Controllers # 5506. This will provide the power source and ground for the wiring for the brake controller. You will need to test the wires from the brake pedal switch of your vehicle to find a circuit that has voltage when the brakes are applied and none
  view full answer...


• Troubleshooting Trailer Brakes Causing Harsh Whiplash Feel When Stopping For a Red Light
  
• There could be a few different things going on in this case Debbie. If you can tell me what tow vehicle, trailer and brake controller you have I will be able to better identify what you may have going on. Most often this is associated with using a timed style brake controller like the Curt Venturer # C74VV. Often times these are selected because of the price but they use a set figure of brake signal to send to the trailer so no matter if you slam on your brakes or lightly press them the
  view full answer...


• Adding a Curt Brake Controller to a 1994 Ford Van
  
• If your 1994 Ford E-350 van came with a factory installed 7-Way trailer connector then all you will need is the brake controller and the proper wiring harness. For Curt brake controllers the wiring harness is # C51322. If the van came with a factory 4-Way then you will still use the same harness but the brake (blue) wire will need to be manually run from the brake controller back to the plug in the rear instead of going through the harness where it plugs into the vehicle. The brake
  view full answer...


• How Does a Brake Controller Wire to a Motorhome
  
• Sounds like your trailer has electric brakes already and you are just looking for a way to wire up your Curt brake controller in the motorhome. Wiring up a brake controller is pretty easy actually. It's just a matter of running 4 wires. You would want to run the white wire to the negative side of the vehicle battery, the black wire to the positive, the red wire to circuit on your brake pedal switch that sees voltage only when the brakes are applied and then the blue wire back to the
  view full answer...


• Troubleshooting Truck Signal Lights Not Working Correctly with Curt Brake Controller Installed
  
• It sounds like you have the Curt Venturer Trailer Brake Controller # C74VV installed on your truck and are having issues with the signal lights. You can certainly disconnect the controller from the vehicle (either by cutting the wires or unplugging it from the factory port depending on how your particular truck is setup) to try and rule out where the problem is coming from. If you disconnect the controller and the truck's lights start to work like normal again then you know the problem
  view full answer...


• Troubleshooting Curt Venturer Trailer Brake Controller With Brakes Always Locked On
  
• The Curt Venturer Trailer Brake Controller # C74VV could be faulty. To find out for sure you can bench test the controller as per the instructions. I have included those below for you to reference. Before removing it for a bench test I suggest checking the red wire that runs to the brake switch. This should only show 12v power when the brake pedal is pressed. If the brake switch is faulty this would cause the brake controller to believe it needs to send power to the blue brake wire.
  view full answer...


• Display on Curt Venturer Brake Controller Intermittently Displays Red Lights
  
• Since it's an intermittent sort of problem, I'm suspecting a loose connection somewhere. If the red dot on the LED display is lighting up, it indicates that the vehicle has lost the electrical connection to the trailer brakes. The most common cause for this is a dirty or damaged 7-way on the vehicle or the trailer. Closely examine the sockets and pins of the 7-way trailer connector, on both the trailer and the vehicle side of the equation. Look for bent pins or green/white corrosion on
  view full answer...


• Troubleshooting Curt Venturer Brake Controller on 2008 Nissan Xterra with No Lights
  
• I spoke with my contact at Curt and he said it sounds like a problem with the wiring on the trailer, probably a bad ground. His advice was to make sure the trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces. The light grounds should also be attached to clean and corrosion free bare metal surfaces. If there is anything between a light ground and the metal trailer frame or
  view full answer...


• Brake Controller and Install Harness Recommendation for a 2011 Toyota Tundra
  
• For a brake controller I would recommend the Prodigy P2 Brake Controller part # 90885. This is our best selling brake controller because of how well it works and how easy it is to setup. This is a proportional brake controller that senses the amount of braking the tow vehicle is applying and applies a proportionate amount to the trailer brakes. To install this controller all you would need is the install harness part # 3040-P. I attached an install video for you to check out as well.
  view full answer...


• Parts Needed To Install Curt Venturer Trailer Brake Controller 2023 Hyundai Santa Cruz Factory 4-Way
  
• You will be able to install the Curt Venturer NEXT Trailer Brake Controller # C74VV on your 2023 Hyundai Santa Cruz with the Pigtail # C77BR. As you only have a 4-way flat you will need the Curt T-Connector Vehicle Wiring Harness # C68JR to install a 7-way on the rear of your Santa Cruz. A Mounting Bracket # C67UR is needed to secure the 7-way since there is not a bumper cutout like you find on most trucks.
  view full answer...


• Mounting Curt Venturer NEXT Trailer Brake Controller
  
• Curt has started using new brackets for their brake controllers, and that is also true for the Curt Venturer NEXT Trailer Brake Controller # C74VV. To mount this, all you have to do is put the included adhesive tape onto the included bracket and stick it wherever you like under your dash. If you'd like, you can also use the included screws with the adhesive to mount the bracket under your dash. With the bracket mounted, you'll just slide the Venturer NEXT controller into the bracket
  view full answer...


• Brake Controller Recommendation for a 2006 Nissan Titan for Tent Trailer
  
• The Curt Venturer part # C74VV would have plenty of braking power to activate the brakes on the tent trailer you are purchasing. This controller can activate up to 3 brake axles so it would be more than powerful enough. I do have a better option for you though. The controller you referenced is a time-delayed controller. Which means that it applies a preset amount of braking power at a preset speed every time you touch the brakes. That can work out decently, but in reality rarely do people
  view full answer...


• Troubleshooting Brake Controller that Says Not Connected to Trailer
  
• Since your trailer's brakes worked on another truck that would indicate that the problem is on the truck side of the equation. First and easiest thing to check is to check for corrosion on your truck's 7-way. Some fine grit sandpaper can easily remove any corrosion that would prevent the connetion from being made. Testing the brake controller is fairly easy. Sever the blue brake output wire near the brake controller leaving enough room to reconnect it and then apply the manual slide.
  view full answer...


• Brake Controller Recommendation for a 2005 Ford Excursion V10
  
• Yes, the Curt Brake Controller part # C74VV that you referenced has been confirmed to fit your 2005 Ford Excursion. All you need to install it is the correct harness, part # C51322. This adapter plugs into the port on your vehicle's built-in brake control wiring harness. This harness should be located beneath the dash, near the center console.
  view full answer...


• Will Display Light of Curt Venturer Drain Vehicle Battery
  
• The LED light of the Curt Venturer Trailer Brake Controller # C74VV draws such a miniscule amount of amperage that it would take a very long time to deplete a car battery to the point it wouldn't start the vehicle. Basically the battery would have gone dead due to inactivity before the display light would drain it.
  view full answer...


• Where Does a Curt Venturer Brake Controller Plug In on a 2016 Ram 1500
  
• In order to install the Curt Venturer brake controller # C74VV on your 2016 Ram 1500 you will need wiring harness # C51458. It plugs into the factory plug on the truck located under the dash, to the right of the steering column, taped to another harness. I included a picture showing the location. the picture is from the instructions for # C51458 which I have also linked for you.
  view full answer...


• Is Anything Else Needed to Install Curt Venturer Brake Controller on a 2005 Dodge Dakota
  
• If your 2005 Dodge Dakota has the factory 7-Way then you need the Custom Wiring Adapter # C51332 to install the Curt Venturer # C74VV. Sure you can hardwire it but this gives you a great way to easily connect and disconnect the controller without having to install it permanently. Same thing if you don't have the factory 7-Way. You will need the Universal Adapter # C51515 to avoid splicing the controller directly into your vehicle wiring. This adapter does require splicing but the end
  view full answer...


• How to Install a Trailer Brake Controller on a 2010 Chevy Avalanche
  
• The wiring to install a trailer brake controller is located under the dash of your 2010 Chevy Avalanche. There will be 4 or 5 wires held together with a white tag that lists the functions of the wires. The bundle should be under the dash to the left of the steering column. If using Curt brake controller # C74VV you will also need wiring harness # C51515. The connections should be as follows: Brake controller white to truck white for ground Brake controller black to truck red/black
  view full answer...


• Wiring Diagram/Colors for Installing Curt Venturer Brake Controller
  
• The Curt Venturer part # C74VV uses the standard brake controller wiring colors of white for ground, red for stoplight switch, blue for brake output to trailer connector, and black to 12 volt power. I also attached a link to the install instructions for this controller for you to check out as well.
  view full answer...


• Low Brake Output Power on Truck 7-Way with Brake Controller Installed and Engine Off
  
• The dim light on your tester is indicating a small amount of power coming from the brake output pin of your 7-Way. This is completely normal with a trailer brake controller installed like your Curt Venturer # C74VV. Trailer brake controllers will constantly send back small, short pulses of power back to the 7-Way and it's basically the controller's way of checking for a connection with a trailer. The amount of power it uses for this is extremely small so you don't have to worry about
  view full answer...


• Custom Wiring Adapter For A Curt Brake Controller On A 2022 Chevrolet Express
  
• The Curt Custom Wiring Adapter for Trailer Brake Controllers # C51451 will plug into a Curt trailer brake controller like the Curt TriFlex Trailer Brake Controller # C24VV, and then will plug into your vehicles junction box located underneath the dash. However, # C51451 does not look like it'll work with your 2022 Chevrolet Express Van, so you'll want to use the Universal Wiring Adapter for Curt Trailer Brake Controllers # C51515.
  view full answer...


• Brake Controller Install Harness and Brake Controller Recommendation for 2015 Chevy Silverado 1500
  
• Yes, the Curt brake controller install harness part # C51451 that you referenced will allow you to install a Curt brake controller in your 2015 Chevy Silverado 1500 like the Curt TriFlex part # C24VV.
  view full answer...


• Troubleshooting Curt Trailer Brake Controller Installation On a 2014 Cadillac Escalade
  
• It looks like the Curt Custom Wiring Adapter # C51451 is only confirmed to fit the 2015-2022 Cadillac Escalade. With you connecting it to a 2014 Escalade it is likely going to a connection that is not for the brake controller. On the 2014 you should be using a Universal Wiring Adapter # C51515 since the wires are not terminated into a connector but only cut and sealed at the ends. Then you will be able to connect a brake controller like the Curt TriFlex # C24VV. I have linked an article
  view full answer...


• Does Curt Brake Controller Install Harness part # C51451 Fit 2018 Chevy Silverado 2500HD
  
• Yes, the Curt brake controller install harness part # C51451 that you referenced is a confirmed fit for your 2018 Chevy Silverado 2500 for installing a Curt brake controller like the Curt Triflex part # C24VV which would be a great option.
  view full answer...


• Where Does a Brake Controller Plug In on a 2014 GMC Sierra 1500
  
• On your 2014 GMC Sierra 1500 there is a junction box with a black cover on it located on the driver's side floorboard, way in the back, to the left of the brake pedal. There should be an empty spot to plug in the wiring harness located in the upper left corner. I have included a link to a video that should help. It is a different harness but it plugs into the same spot.
  view full answer...


• Curt Brake Controller Wiring Adapter for a 2006 GMC Sierra
  
• We do have a plug-in adapter for your 2006 GMC Sierra, but the Curt # C51451 that you referenced is a fit for Chevy Silverado and GMC Sierra pickups starting in 2014. For your 2006 Sierra you want the Curt # C51352 instead. This adapter will plug into the junction box beneath your vehicle's dash as is demonstrated in the attached photos.
  view full answer...


• How Does Brake Controller Install in 2014 GMC Sierra 1500 Using Factory Install Harness
  
• The brake controller jumper wire you found in the glove box can be used to wire in the brake controller you have. I am not sure which controller you have but basically you'll plug the harness into the port under your dash for the brake controller install and then you'll wire it color for color to the brake controller's wiring and it will be wired in and ready to work.
  view full answer...


• Brake Controller Install in 2014 GMC Sierra
  
• The install procedure will depend on if you have a 1500 or a 2500/3500 Series. If your Sierra is a 1500 model, you will need a brake controller wiring adapter harness, part # C51451. The 2500 and 3500 series would have the tow package wiring that sits above where the driver's left knee sits. If you click the video link I've provided, you can see a controller being installed in a 2014 GMC Sierra 1500. The FAQ link I provided shows how to install a controller in the 2500/3500 model. The
  view full answer...


• Curt Brake Controller Wiring Harness for 2018 Chevy Suburban
  
• The Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In # C51451 is a fit for your 2018 Chevy Suburban if you already have the factory tow package with the factory 7-way trailer connector. If you do not have the factory 7-way, then you will need the Replacement Custom Multi-Tow 7-Way and 4-Way Trailer Connectors # 30955 and will hardwire the wires present under your dash to the Universal Wiring Adapter for Curt Trailer Brake Controllers # C51515.
  view full answer...


• Brake Controller Wiring Harness for 2015 GMC Sierra 1500 and Curt TriFlex Brake Controller
  
• For your 2015 GMC Sierra 1500 and Curt TriFlex brake controller # C24VV you will need wiring harness # C51451 to plug the controller into your truck. I have linked instructions for both parts for you.
  view full answer...