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FITS 2007 Cadillac Escalade
Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 5-Pole Flat Trailer Connector

Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 5-Pole Flat Trailer Connector

Item # C56584
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Custom Fit Vehicle Wiring
Confirmed to Fit
2007 Cadillac Escalade

with factory 7-Way

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Call etrailer.com at 800-298-1624 for expert service. We are your Cadillac custom fit vehicle wiring experts, and offer a lowest price guarantee. etrailer.com carries a complete line of Curt products for your Cadillac Escalade 2007. Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 5-Pole Flat Trailer Connector part C56584 from Curt can be ordered online at etrailer.com. Complete custom fit vehicle wiring installation instructions and technical support.
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2007 Cadillac Escalade - Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 5-Pole Flat Trailer Connector

  • Trailer Hitch Wiring
  • 5 Flat
  • No Converter
  • Curt

Quickly and easily install a 5-way trailer connector on your Cadillac Escalade with this custom harness. T-connector plugs directly into OEM tow package wiring harness - no cutting, splicing or tapping required. Ideal for towing a trailer with surge brakes.


  • Provides a 5-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
    • Designed for use with a factory tow package that has a 7-way connector
      • Retains 7-way connector functionality
    • Fifth pin provides connection to reverse lights to allow proper functioning of hydraulic brake actuator
    • Compatible with 4-way flat trailer connectors
  • Connects quickly and easily - no cutting or splicing of wires
    • Plug T-connector in-line with existing 7-way trailer connector
  • Comes with dust cap for 5-way flat connector
  • Limited 1-year warranty


This custom-fit T-connector plugs into your factory tow package wiring harness. It is designed to tee into the back of your existing 7-way connector at the rear of your vehicle. Your 7-way trailer connecter will retain its functionality.

Once installation is complete, the 5-way flat connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.

It is recommended that you use a small amount of grease on all electrical connections - the plugs on your automobile and the 5-pole connector itself - to help prevent corrosion.

56584 CURT T-Connector - OE Add-On 5-Flat

Installation Details C56584 Installation instructions

California residents: click here

Customer Reviews

Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 5-Pole Flat Trailer Connector - C56584

Average Customer Rating:  4.9 out of 5 stars   (27 Customer Reviews)

Quickly and easily install a 5-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into OEM tow package wiring harness - no cutting, splicing or tapping required. Ideal for towing a trailer with surge brakes.

- C56584

The thing didn’t work on my truck and I could not tell that from the web page info. Perhaps my fault.

That will fit your vehicle if you have the factory connector. If you do not have that connector then part # HM40655
Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
is what you would need.
-- Etrailer Expert Brooke M - 10/19/2021

- C56584
2013 Chevrolet Silverado

Product was as advertised, and installation took about 15 minutes. Slight delay because I had a 5th wheel wiring harness already piggybacked in place. This adapter saved me hours or wiring a new plug.

Had problems with plugs reverse connection. I could not back my trailer up as there wasnt current to the reverse solenoid. After hours of trying to figure out why, I took the harness out and discovered that it was assembled incorrectly. I fixed the wire locations and now it works. Giving it 1 star now as it cost me half a day.Poor quality inspection.Steve A.,
-- comment by: Steve A - 07/04/2014

- C56584
Dodge Ram Pickup

I've ordered from etrailer a number of times before. Their descriptions of the equipment, in this case a 7 pin to 5 pin T , is very clear and avoids disappointment. This was the exact adapter I needed. I've had quick shipping and no regrets. I'm using the adapter to add an LED stop/backup strip to my 2020 RAM 1500. The 5 pins are needed to pickup the backup lights. I could have tapped into the backup lights but the new electronics in the truck would notice the additional current draw. The 7 pin harness has the signals needed and the electronics monitoring the trailer signals is tolerant of different loads.

- C56584
2001 Chevrolet Silverado

My 2001 Silverado factory tow package didn't include the 4 pin plug. Not that its needed often but I wanted to install an LED tailgate light bar and didn't want to tap into wires as they can corrode here in Ohio. Purchased this and its perfect. Nice, tight fit to keep water out of the plugs, and has plenty of wire to reach anywhere it would be needed. Now my LED bar can just plug in! Awesome product and super simple to install in seconds. Thank guys!

- C56584

The product I got for didn’t last two months. But the wiring harness I picked up from y’all was the right thing and work very well it’s still installed on the vehicle

- C56584

This was the second one of this product that I purchased. Both worked exactly as intended with very easy installation. I saw a previous review that said they had to do some rewiring, I believe their trailer was not wired correctly as both of the products I purchased worked immediately. I would not hesitate to buy this again the next time I accidentally rip it off my truck.

- C56584
2017 Toyota Tacoma

Fit our 2017 Tacoma (with factory tow hitch) perfectly. Now we have 4-flat (factory), 5-flat (this "T" from Curt/etrailer), and 7-round (factory).

- C56584

Easy to install and worked first time, seems well made and should last. Now I can stop using the adapter for my boat trailer and just plug straight in.

- C56584

I choose etrailer for every order I need. Not I’ll not I’d the customer service amazing but the but the speed and shipping is the best around! I wouldn’t recommend any other company to ever buy from

- C56584

no need to cut into factory wiring. saved time

Still works great
John - 02/12/2020

- C56584

I used the this item to "tap" into the light system for a under the tail gate LED strip, worked great and keeps the connections clean and user friendly.

- C56584

Made a nice clean installation. Now I can use factory bumper outlet for My slide-in camper and the new 5-way flat connector for my boat trailer! Thanks Bob.

- C56584

I haven't hooked up yet . Thanks good deal. Quick shipping thanks

- C56584
2012 Ford F-250 and F-350 Super Duty

Plugs in perfectly to the factory harness without having to splice into the wiring. Exactly what I needed and verunning pleased with everyone at the Etrailer family. Definitely will order from them again in the future!

- C56584
2008 Ford F-250 and F-350 Super Duty

Great product. Used to add plug for slide in camper and not cutting harness

- C56584
2013 GMC Sierra

Perfect fit Quality product! It made hooking my tailgate led light bar an easy install

- C56584

Happy with the product. No problems. Works great

- C56584

great product and service!

- C56584
2016 Ram 1500

Great fast shipping works great no cutting wires

- C56584
2012 Chevrolet Silverado

Plugs right up and works great!

- C56584
2011 Chevrolet Silverado

Works great, easy to install.

- C56584
2004 GMC Sierra

Looks just like what I was looking for thanks

- C56584
1999 Ford F-250 and F-350 Super Duty

great product as always and at a good p rice

- C56584

- C56584
2010 Ford F-250 and F-350 Super Duty

Exelent fitment, fast shipping

Show More Reviews

Ask the Experts about this Curt Custom Fit Vehicle Wiring

  • Installing 7-Way Trailer Connector and Brake Controller in 2014 Dodge Grand Caravan
    To install a 7-way trailer connector on your van, you'd first install a functional 4-pole connector, like part # 118534. Once that's installed, you can install a 7-way by plugging the # 37185 adapter into the 4-pole. Once the white wire is grounded, the lighting functions on your 7-way will all be functional. If your trailer has electric brakes, and you want them operable you'll need to install a brake controller. For a basic but easy to use controller, I'd recommend the Tekonsha Primus,...
    view full answer...
  • Can the Curt T-Connector 7-way to 5-Way be Used with Lightbar that Has Reverse Circuit
    Yes, if your vehicle has a 7-way installed on it that has the reverse light circuit active the part # C56584 that you referenced can install in line with it and allow you to have a fully functional 5-way with active reverse light circuit. You could then use it with the light bar you have at the rear of your vehicle as well.
    view full answer...
  • Could Breakers of 7-Way Kit for 2014 Dodge Grand Caravan Be Replaced with Fuses
    Breakers and fuses both provide the same function as far as circuit protection with the difference being that breakers reset themselves and fuses burn out which requires replacement. If you wanted to use fuses instead of the breakers that are included with the 7-way kit part # 22121 that fits your 2014 Dodge Grand Caravan you certainly could. Using relays to provide power for the lighting and trailer brakes is fine as long as they are rated for the amperage draw they'll be encountering...
    view full answer...
  • Parts Needed to Install 7-Way in 2014 Audi Q7
    You'll need to start with a 4-way first to install a 7-way since your vehicle doesn't have pre-wiring. For that you would want the # 119250KIT. Now if your trailer does not have brakes all you would need is the part # 37185 as an adapter to convert the 4-way to a 7-way. If you do have trailer brakes you would need the # ETBC7 instead of the # 37185 and a brake controller. This kit comes with everything needed to wire up the 7-way and install a brake controller. For a brake...
    view full answer...
  • Adding 4-Pole Trailer Connector to 2020 Chevy Sillverado Trail Boss in Addition to Factory 7-Way
    The Curt # C56584 you'd looked at would work perfectly. At the back of the existing 7-way, find where the tow package harness plugs into the back of the 7-way. There will be a gray clip that you will slide out, which will allow you to unplug the harness from the back of the 7-way. Then, you'd plug the Curt # C56584 inline with that connection. It's a very simple installation that should only take a few minutes. I've linked you to an install video for an identical wiring harness. The...
    view full answer...
  • 7-Way Trailer Wiring Recommendation for 2019 Honda Ridgeline
    If you are looking for a 7-way trailer wiring connector for the rear of your 2019 Honda Ridgeline the correct part number is # 118288 which comes with everything needed to install on your vehicle. The # C56584 is a kit designed to plug inline with 7-way to provide a 5-way.
    view full answer...
  • What Circuit Does the 5th Pin of the part # C56584 Carry
    Yes, the fifth pin of the Curt wiring harness part # C56584 that you referenced does carry the reverse light circuit so it would work well for you.
    view full answer...
  • Installing a 7-Way Trailer Connector on a 2009 Ford F-250
    If you are looking for a replacement 7-way trailer connector for your 2009 Ford F-250, you can use either the Tow Ready Replacement Multi-Tow 7-Way and 4-Way Connector, # 74682, or the Pollack Replacement 7-way Socket, # PK11893. Keep in mind, these will only work if your truck came with a factory 7-way connector and you are simply looking for a replacement connector. If your truck only has a 4-way flat connector and you are looking to upgrade to a 7-way way connector, then I recommend...
    view full answer...
  • Does Curt 7-Way to 5-Way Provide Reverse Light Circuit
    Yes, the 5-way that the Curt 7-way to 5-way adapter # C56584 provides does have a 5th pin that has the reverse light circuit like you are needing. So the pin on the one side of the connector that has the blue wire does carry the reverse light circuit. I attached a review video link for this for you to check out as well.
    view full answer...
  • What Gauge Wire Does the Curt 5-Way OE T-Connector Vehicle Wiring Harness Use
    I spoke with Curt and they informed me that the Curt T-Connector Vehicle Wiring Harness part # C56584 uses 12 gauge wire for the ground and then the rest are all 14 gauge which is plenty for most trailers. I have personally never heard of any issues with this harness related to the gauge of wire used.
    view full answer...
  • 4-Way Trailer Connector Recommendation for a 2004 GMC Sierra
    Your 2004 GMC Sierra should have come with a round 7-way at the rear of vehicle mounted in the bumper by the license plate. If you have this and are looking for a 4-way as well you can get the part # C56584. This will install in line with your 7-way and will give you a 4-way you can use. Or if you are missing the 7-way you could use the # 74682 as a replacement. This also comes with a 4-way connector mounted to the side of the 7-way.
    view full answer...
  • Does Curt 5-Flat Connector Fit 2016 Chevy Colorado With Factory 7-Way
    That's a good question so I checked with Curt, and can verify for you that the Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 5-Pole Flat Trailer Connector # C56584 is a fit for your 2016 Chevy Colorado with the factory 7-way. I also want to mention that we do always recommend using Dielectric Grease # 11755 with any new trailer connector to add protection to increase its durability and lifespan. I have added a link to our selection of mounting brackets, as well...
    view full answer...
  • Will the Curt T-Connector Harness for Factory Tow Package with 5-Way Work On a 2018 Ford F-150
    Yes, the Curt T-Connector Vehicle Wiring Harness for Factory Tow Package part # C56584 will fit a 2018 Ford F-150 and it tees into the factory harness so you can still use the bumper trailer connector alone with it.
    view full answer...
  • Will the Curt T-Connector Vehicle Wiring Harness 5-Pole Work On a 2014 Ram 1500
    The Curt T-Connector Vehicle Wiring Harness for Factory Tow Package part # C56584 is compatible with a 2014 Ram 1500. It contains the reverse light circuit as well as the running and stop/turn.
    view full answer...
  • Will Curt T-Connector Wiring Harness for Factory Tow Package C55384 Fit 2015 Ram 1500 Factory Wiring
    Yes, the Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector # C55384 will plug in line with the factory 7-Way trailer connector on a 2015 Ram 1500. I have linked a video showing an example installation on a different truck.
    view full answer...
  • 7-Way to 5-Way Adapter To Add Rear Light Strip On 2019 Nissan Frontier
    I took a look at the factory wiring on the 2019 Nissan Frontier and factory tow plug wiring is located along the driver's side frame rail behind the rear bumper. Since the connectors are square the Curt part # C56584 cannot connect to the factory wiring in the Frontier. The Curt harness is designed to plug in line with the 7-way on the vehicle but the factory 7-way on the Frontier is not 2 pieces so it does not come apart to accept the Curt harness. I recommend Hopkins part # HM47570...
    view full answer...
    Image 1 for Image 2 for
  • 4-Way Trailer Wiring Harness Recommendation for 2013 Infinitiy JX35
    I am not sure where you saw that the Curt 4-way harness part # C56584 is a confirmed fit for your 2013 Infiniti JX35 but I checked our fitguide and Curt's and they do not state that this is a fit. The only 4-Way trailer wiring options we offer for your 2013 Infiniti JX35 are hardwired install kits like the Tekonsha kit part # 119190KIT which we had the chance to install on a 2013 JX35 just like yours. Check out the install video down below to see a walk-through of the install.
    view full answer...
  • How To Obtain Reverse Circuit on Truck for Tailgate Light Bar Without Splicing
    I do have an option for you but you won't be able to find a reverse circuit on the Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector part # C55384 since it only has a 4-pole. For this, you'll need a 5-pole like the Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 5-Pole Flat Trailer Connector part # C56584. The reverse wire in this harness is blue.
    view full answer...
  • Recommended 5-Way Connector for 2012 GMC Sierra 2500
    We do have a trailer connector similar to the Hopkins # 30955, but with a 5-Way connection as well, with the Hopkins Endurance # HM48470. This particular connector features 7-Way, 5-Way, and 4-Way plugs. This issue is that this would need to be hardwired to the wiring on your truck, as there is not a custom-fit, plug-in model available. A better option for your 2012 GMC Sierra will be to use the Curt 5-Pole T-Connector Vehicle Wiring Harness # C56584 if you have the factory 7-Way. This...
    view full answer...
  • Recommended Trailer Wiring and Brake Controller for 2004 Chevy 2500
    It sounds like you are wanting to add a 4-way to your factory 7-way on your 2004 Silverado. There are a couple of options to do that. You can choose from the following based on your preferences in appearance: 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket # HM40975 Reese Multi-Plug Wiring Harness for Factory Tow Package - 7-Way and 4-Way # 74682 Replacement Custom Multi-Tow 7-Way and 4-Way Trailer Connectors # 30955 Curt T-Connector Vehicle Wiring Harness for Factory...
    view full answer...

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Info for this part was:

Employee Leah B
Edited by:
Leah B
Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee John H
Expert Research:
John H
Employee Lindsey S
Written by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Ryan G
Installed by:
Ryan G
Employee Joshua S
Video by:
Joshua S
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B

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