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Curt Trailer Connector Adapter with Backup Alarm - 4-Way to 7-Way RV and 4-Way Flat
CURT

Curt Trailer Connector Adapter with Backup Alarm - 4-Way to 7-Way RV and 4-Way Flat

Part Number: C57102
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$46.50
Retail:$61.67
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This multi-function, vehicle-end connector converts any 4-way flat, vehicle-end plug to a combination 7-way outlet and 4-pole flat outlet. Features an integrated backup alarm. Great Prices for the best trailer wiring from CURT. Curt Trailer Connector Adapter with Backup Alarm - 4-Way to 7-Way RV and 4-Way Flat part number C57102 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (67)
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CURT Trailer Wiring - C57102

Highlights

  • Multi-Function Adapter: Converts 4-way flat to 7-way RV and 4-way flat outlets.
  • Integrated Backup Alarm: Alerts when vehicle is in reverse for added safety.
  • Durable Construction: Made of sturdy plastic for long-lasting use.
  • Easy Wiring Setup: Requires additional wiring; detailed instructions included.
  • Vehicle Compatibility: Perfect fit for vehicles needing a 4 to 7-way conversion.
  • Versatile Use: Supports brake, power, and accessory lines for full functionality.

Features to know about

Reliable Reversing Alert: Integrated Backup Alarm

Backing up can sometimes catch us off guard, especially in busy areas. The Curt Trailer Connector Adapter features an integrated backup alarm that sounds every time your vehicle goes into reverse. This enhanced safety feature ensures you're always aware, adding an extra layer of safety when you're reversing, irrespective of whether you’re towing or not. This alert system has been lauded by users as ""a much-needed upgrade"" that provides peace of mind.

Versatile Towing Made Easy: Multi-Function 4-Way to 7-Way Adapter

Switching between different trailer connections can be a hassle, but not with this versatile adapter. It seamlessly converts any 4-way flat, vehicle-end plug into a combination 7-way outlet and 4-pole flat outlet. This makes it incredibly convenient for towing different types of trailers, offering flexibility for both daily towing tasks and long-haul adventures with its plug-and-play functionality.

Hassle-Free Additional Connections: Convenient Wiring Setup

Connecting additional wires for features like brakes, power, and accessory leads is straightforward. It includes yellow and blue wires for reverse lights and brakes, a black wire for 12-volt power, and a white wire for grounding. This setup simplifies wiring tasks, allowing for a stress-free installation process that even users with minimal wiring experience have found manageable.

Durability for Every Weather: Rugged Plastic Construction

The Curt Trailer Connector Adapter is built to withstand the rigors of road travel with its durable plastic construction. This robust design ensures it stands up to harsh weather conditions and regular use, making it an ideal choice for those who demand reliability and longevity in their towing equipment.

Comprehensive Connections: Built-In 12 Volt Power Supply

For those who need more than just basic towing connections, this adapter offers a built-in 12-volt power supply, suitable for running necessary trailer systems or charging onboard batteries. Whether your trailer includes electric brakes, a refrigerator, or a heating system, this feature ensures you have the power needed for any additional trailer functions during your trips.

Simplified Installations: Clear and Easy Wiring Instructions

With straightforward instructions and a design that prioritizes ease of use, installing this adapter becomes a nearly effortless task. The easy-to-follow steps allow for quick setup, transforming your vehicle setup into a towing powerhouse without any headaches, as users have praised it for being ""the right fit"" with minimal fuss.

Specs

Wiring

  • Yellow wire: for reverse lights
  • Blue wire: for brakes
  • Black wire: for 12 volt power
  • White wire: ground
  • 4-Way connector: plugs into vehicle 4-way connector

57102 Curt Multi-Function Socket with Back Up Alarm - 7-Way RV Blade and 4-Way Flat - Universal Fit

Installation Details C57102 Installation instructions


California residents: click here


Video of Curt Trailer Connector Adapter with Backup Alarm - 4-Way to 7-Way RV and 4-Way Flat

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Detailed Breakdown of the Curt Trailer Connector Adapter with Backup Alarm

Man: Today we're going to be taking a look at Part Number C57102. This is a Curt Trailer Connector Adapter with a backup alarm. This is 4-way, the 7-way round and 4-way flat. The multi-function vehicle end connector is going to convert any 4-way flat connector vehicle end plug to a combination of a 7-way outlet which is going to be this portion right here. And a 4-pole flat outlet. It's also going to feature the integrated backup alarm and it's going to have three LED lights on there as well. This is designed to connect to a 4-way flat plug on your vehicle.

You're going to have the connection right here to make that appropriate connection. It is going to require additional wiring for the use of brake, power, and accessory leads. All of the brake or . excuse me. All the wires here included in the harness or the adapter are going to have the appropriate connectors on here.

You're going to have three of them that are going to have the butt connectors and then the white is going to be your ground and that's going to have the ring terminal on there that will need be attached with a self-tapping screw. So again this is going to supply your 7-blade RV connector right here as well as a 4-way flat trailer connector. It's going to have the nice dust cap that goes over the connection points to prevent them from any type of corrosion. And then on the 7-way connector it's got the nice spring loaded lid that's going to protect the connection points as well. Now this is going to be constructed of a durable plastic construction. It's going to come with a mounting bracket and the necessary hardware to mount the connector to the actual bracket. You will need the hardware to mount the bracket to the vehicle, that is going to be sold separately.

Through these holes right here that's going to connect using two number 10 half inch self-tapping screws. You can also use a number 10 half inch self-tapping screw to mount the ground connection with the ring terminal here on the end of the white wire. Now to go over the wire functions real fast with you, the yellow wire is going to be for the reverse lights. Your blue wire is going to be for the brakes. The black wire is going to be for 12 volt power and then your white wire is going to be for your ground connection and then you're going to have the four way connector that's going to plug into the existing vehicle 4-way connector. Once you have all those connections made, you're going to have full use of your 7-way connector right here as well as the 4-way flat connector right here. I'm going to show you how it mounts with the bracket.

Just run all the wiring through the slots there, feed your 4-way flat through there as well. Now the holes in the bracket are going to line up perfectly with the holes here on national connector. Now that's going to be able to mount to the rear of your vehicle. It's going to hold it place and you have a little area here on the side of the bracket for your 4-way connector as well so it's going to stay right there next to the 7-way connector. That bracket is going to hold it in place. So real quick I just want to go ahead and show you the function here of the backup alarm. I'm going to go on and make our necessary connections and then you can see how that operates. Sends out a nice strong signal. It's really loud. You'll be able to see the lights flash as well. I'm going to activate the reverse function (beeping sound). That's going to sound and flash anytime the reverse function is activated on your vehicle. That's going to do it for today's review of Part Number C57102. This is the Curt Trailer Connector Adapter with the built in backup alarm. .

Customer Satisfaction Score:

Ratings & Reviews

4.7

67 reviews
This multi-function, vehicle-end connector converts any 4-way flat, vehicle-end plug to a combination 7-way outlet and 4-pole flat outlet. Features an integrated backup alarm.

by:

Exactly what I was looking for. Easily connected to my existing 4-way without any additional wiring. The 7-way adapter bracket was the correct size, and the holes were pre-drilled for the right fit to connect to the existing bracket on the (U-Haul Installed) tow bar.



by:

Ordering was simple and delivered quickly! Fast and simple to install! I couldn’t be anymore pleased with the whole process and the product! It has worked flawlessly ever since I installed it! I will purchase from this company again in the future as needed!



by:

Perfect fit with easy installation inst ructions!



by:

Good product and install instructions.
The
only complaint is the 4 pin connector falls out of the housing.



by:

Just what I needed, easy to install. Excellent instructions. Good quality at a good price. etrailer, my go to place for everything "trailer/towing", Not my first purchase. Don't spend too much time shopping around, you'll be frustrated with the wasted time. Thanks



by:

very well built, easy to install. made converting from 4 wire flat connector to 7 wire round an easy process.
I will use the 12 volt battery and the backup wire ,don't need the brake wire.



by:

Just what I needed



by:

Just received the 4-way to 7-way adapter and it is everything I had hoped it would be. Shipping was extremely fast and it arrived when you said it would. Thank you.

Charles Stanley



by:

It fit perfect, and we pulled our camper to California from Ohio and back, no problems.



by:

Great product....easy wiring and mounting...works flawlessly



by:

I never used it. It does not fit my motorhome. Still sitting in my garage.

Katrina D. profile picture
Etrailer Expert

Katrina D.

4/17/2024

I am sorry. Let me get you over to customer service for them to get a return issued for you.



by:

Easy installation



by:

Works great!



by:

Installed perfect .. love it

Jeffery profile picture

Jeffery

3/19/2023

Super



by:

LOVE/LOVE/LOVE "this" particular model= it has a "beep" warning alarm noise system when you are backing up! IT ALERTS! YOU-LOUD! AWESOME/much needed upgrade from what came with my vehicle.

by:

Product is great. Guy on phone made it sound super simple. Now I have to go get the additional pieces and wires to hard wire it in…thought the phone rep should have been more thorough. “Oh, c’mon Jim. Don’t be afraid.” He said nothing about splicing, running wires, circuit breaker or anything.

Sierra K. profile picture
Etrailer Expert

Sierra K.

7/7/2022

Sorry about that! This product uses at least 12 gauge wire and butt-connectors to connect the wires to the appropriate functions. Most of the time the colors are in this order but you may have to confirm the function with a circuit tester. Yellow for auxiliary or back-up lights, blue for electric brakes, white for ground, and black for positive power. If you do not need some of the functions, you can secure the wires up using cable ties.



by:

I like what I see but unable to give an accurate review because I don't have it installed on my vehicle yet since I just got it this afternoon and had other projects in the process at the moment.



by:

Not an Easy hookup for my new Rubicon as stated.



by:

Carlos profile picture

Carlos

8/27/2022

Its working great pulling my Aliner with my Kia Sportage.



by:

Installed and seems to work fine. Will put it to the test next spring.



by:

Great product for the price not to mention hella easy hook up thanks holly recommended



by:

My son got it on and works great. Fast service. Can not complain.



by:

Love it



by:

Great high quality at a very reasonable price .



by:

Product exactly as described. Shipped fast and in good condition.


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See what our Experts say about this CURT Trailer Wiring

  • How Does the Curt Connector # C57102 Wire Up
    After you plug the 4-way in from your 2006 Ford E-350 to the Curt Trailer Connector Adapter # C57102 you will need to run the rest of the wires as follows: The white wire will need to be grounded to a clean metal surface. The blue wire will go to the brake output signal of your brake controller. The black wire will go to the positive side of your battery through a 40 amp circuit breaker like part # PK54540 The yellow wire will run to the reverse light circuit.
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  • Does The Curt 7-Way Require a 12 Volt Charge Line To Be Connected When Brake Controller Isn't Needed
    When installing the Curt Trailer Connector Adapter with Backup Alarm # C57102 you will only need to connect the dedicated 12 volt power wire if your trailer requires a power wire. There are several trailers like small pop ups which tie into the 12 volt charge line to maintain power for a refrigerator or heating system and the trailer will not require the operation of brakes. With that said if the trailer has electric brakes you will need to have a controller like the Curt Echo # C51180...
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    I have both a 4-way and 7-way connector that are custom fit for your 2023 Chevy Traverse. They are the 4-Way Curt T-Connector Vehicle Wiring Harness item # C56394 and the 7-Way Curt T-Connector Vehicle Wiring Harness item # C56393. These custom-fit T-connectors plug into your Traverse's wiring harness, which is located above the muffler on the driver's side. I have linked a couple of installation videos for both below. Neither one of them have a back up alarm. The only option to purchase...
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  • Installing a 7 way Plug On An Australian 1998 Land Rover Discovery
    I do have a potential solution for you. Unfortunately we do not offer any kind of custom wiring kits or adapters you can use for this purpose. What you can do is remove the 7 pin flat plug and splice in a 7 way round plug like the # C57102. In order to separate out the turn signals from the brake lights you would need a converter, # 118158.
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    Since your trailer already has a brake controller on it you shouldn't need to connect the blue wire from the Curt Trailer Connector Adapter with Backup Alarm # C57102 so you should be able to just cap it off and be fine. I say "should" because any brake controller I've seen that installs on the trailer only requires the standard light functions along with the 12V power. If you can confirm what brake controller you have then I can double check the installation.
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  • Does the Alarm Always Sound in Reverse on the Curt Trailer Connector Adapter with Backup Alarm?
    Any time your vehicle is placed in reverse, whether you are towing or not, the alarm will sound on the Curt Trailer Connector Adapter with Backup Alarm item # C57102. To have the same connector without the beeping sound you will want the Curt Trailer Connector Adapter item # C57672. This is the same 7-way and 4-way connector without the alarm. I have linked an installation video below.
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  • What are the Wire Functions of the CURT Trailer Connector Adapter, # C57102
    You are correct. On the CURT Trailer Connector Adapter, # C57102, the white wire is ground, black is for 12 volt power, blue is for brakes, and yellow is for reverse lights. The 4-Way would then just plug into a 4-Way trailer connector on the vehicle to provide the remainder of the lighting functions. Be sure to ground the white wire to the vehicle frame for the connector to function properly.
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  • Does the Backup Alarm on Curter Trailer Connector Adapter # C57102 Sound Just when Towing
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    The Curt Echo Brake Controller # C51180 referenced in your question does not need to be at any particular angle in relation to the ground for proper operation. The controller simply needs to be plugged into the 7-Way on the tow vehicle and it will work as it should. When converting your 4-Way to a 7-Way with an adapter like the Curt # C57102 you will only need to run the 12V power wire up to the vehicle's battery like you mentioned. The brake output pin on the 7-Way does not need to be...
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  • Universal Version of the Curt Trailer Connector # C57101
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  • Parts Needed to Add a Trailer Brake Controller on a 2000 Toyota 4Runner
    The information I have on a 2000 Toyota 4Runner is that a brake controller has to be hardwired in so you would follow the instructions in the FAQ I have linked. The black wire on # C57102 will connect to the positive battery terminal via a 40 amp circuit breaker # PK54540. The white wire will ground to the vehicle frame. The yellow wire will connect to the reverse light circuit if the trailer has reverse lights. The blue wire will connect to the blue wire from a brake controller. For...
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  • Where to Tap Into Reverse Light Circuit to Install Trailer Connector Adapter with Backup Alarm
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