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Curt Tow Bar 7-Way Coiled Power Cord w/ 7-Way Socket - 8' Long
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CURT

Curt Tow Bar 7-Way Coiled Power Cord w/ 7-Way Socket - 8' Long

72 Reviews | 12 Questions
$100.74
Retail:$148.95
You Save: $48.21
 Flat Tow Wiring Harness
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curt flat tow wiring harness extension cord c39hr
curt flat tow wiring harness extension cord 7 blade c39hr
curt flat tow wiring harness plugs into vehicle extension cord bar 7-way coiled power w/ socket - 8' long
curt flat tow wiring harness extension cord 7 blade c39hr
curt flat tow wiring harness plugs into vehicle extension cord
curt flat tow wiring harness plugs into vehicle 7 blade c39hr
curt flat tow wiring harness extension cord c39hr
curt flat tow wiring harness plugs into vehicle
curt flat tow wiring harness plugs into vehicle 7 blade bar 7-way coiled power cord w/ socket - 8' long
curt flat tow wiring harness extension cord 7 blade
curt flat tow wiring harness 7 blade c39hr
curt flat tow wiring harness plugs into vehicle bar 7-way coiled power cord w/ socket - 8' long

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This power cable connects your RV to your towed car with a 7-way plug on each end. It's coiled so it won't drag on the ground, and stretches up to 8'. Includes 7-way RV-style socket to install on your vehicle. 1-800-940-8924 to order CURT flat tow wiring harness part number C39HR or order online at etrailer.com. Free expert support on all CURT products. Great prices and Fastest Shipping for Curt Tow Bar 7-Way Coiled Power Cord w/ 7-Way Socket - 8' Long. Flat Tow Wiring Harness reviews from real customers.
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  • Reviews (72)
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CURT Flat Tow Wiring Harness

  • Extension Cord
  • Plugs into Vehicle Wiring
  • 7 Blade
  • CURT
  • Universal Fit

This power cable connects your RV to your towed car with a 7-way plug on each end. It's coiled so it won't drag on the ground, and stretches up to 8'. Includes 7-way RV-style socket to install on your vehicle.


Features:

  • Powers your braking system, tail lights, and any other towing accessories
  • Plugs into the RV's 7-way socket and the included 7-way socket on your towed car
    • 7-Way plug mounts on the front of your vehicle and wires to the electrical components of your flat tow setup
  • Won't drag on the ground
  • Stretches up to 96"
  • Resists wear and tear with durable vinyl coating
  • 1-Year limited warranty


57284 Curt Power Cable for Flat Towing Motorhome and Toad - 7-Wire to 7 Wire RV Style - 8 Ft Coiled Cord

Item # C39HR







Customers Who Purchased This Flat Tow Wiring Harness Also Bought...



Video of Curt Tow Bar 7-Way Coiled Power Cord w/ 7-Way Socket - 8' Long
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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 Tow Bar Extension Cord w/ Socket

Hello everybody, this is Jeff at etrailer.com Today we're going to take a look at this Curt eight-foot-long tow bar, seven-way RV to seven-way coiled extension cord with the seven-way socket. Now, this is ideal for connecting your motor home to your tow vehicle for flat towing. It does include this nice seven-way socket that'll wire into the front of your towed vehicle. And that'll provide the operation of the taillights brake lights, reverse lights, turn signals, electric brakes and auxiliary power on your tow vehicle. The cap adapter cord itself connects the seven-way blade-style connector on your RV to the seven-way connector that mounts on your tow vehicle. So basically, once you have the socket installed on the front, you just take your cord, plug it in just like that.

Once you get it plugged in that little dropdown has a little hook on it and it holds it in there to keep it from wiggling out. Basically you can see, locks into place and then to remove it, just open the lid and then pull your plug right out just like that. Now this coil cord will stretch up to eight feet in length. What's nice you can see it is coiled, so it does prevent the wires from dragging on the ground. And on the inside of this cord is seven 14-gauge size wires.

The ends on these are a mole.. durable molded plastic construction, helps resist corrosion and you can see the cord itself has nice bright blue color to it for easy visibility but that should do it for the review on this Curt eight-foot-long tow bar, seven-way RV to seven-way coiled extension cord with the seven-way socket..

Customer Satisfaction Score:

Ratings & Reviews

4.8

72 reviews
5 Stars
(63)
4 Stars
(7)
3 Stars
(1)
2 Stars
(1)
1 Star
(0)
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by:
The socket that comes with this set comes with connections that require hard to find connectors. I had to purchase a different socket due to this.
by:
Your company was the only one that I could find that had this cord.
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Kate F. profile picture
Etrailer Expert

Kate F.

1/28/2026

I am happy to hear we had just what you were looking for Ken! What adventure are you looking most forward to this year?

Ken profile picture

Ken

1/29/2026

A trip to Charleston 14 Feb and then Disney in Oct.
Kate F. profile picture
Etrailer Expert

Kate F.

1/29/2026

@Ken I grew up on the West Coast, but would love to check out the East Coast sometime in my life, Charleston looks like quite the darling town. But there is nothing better than taking your kiddos to Disney and see their little faces light up, I hope you have an awesome time! Thanks for sharing =)
Ken profile picture

Ken

1/29/2026

If you like history, you will like Charleston. Already took my kid. She is 39 now, it's grandkids this time. May the force be with me.
See All (5) Replies to Kate F. ∨
by:
4 stars not 5. Cord is great, exactly what was needed. The 7 way plug that's included. That's a different issue. Curt only packs half of what is needed. To connect to your wiring you need the other half, and they don't include it in this package. Etrailer could do better by placing a prominent message on this package to let you know to order the other part. I went out to the local parts store to finish the job because I wanted to finish that day and not wait several more. Cost was about the same for the entire 7 blade plug vs the 2nd half that I would have had to wait for.
by:
I really like the Curt Tow Bar Extension 7 way rv cord on both ways. It has not let me down and works great...thanks
Lewis profile picture

Lewis

10/3/2025

It is working great. Have no issue with it

by:
Perfect just as advertised and got here quick. Thank you
by:
Received my order correctly in a timely manner
by:
I never had a single problem with this setup. The 10 footer would have been better for creating additional slack. I secure with rubberized bungies mounted to the toad and my rig to prevent possible over extension resulting in partial or full disconnect.
by:
Well made and great to have the coil to keep it off the ground
by:
The video explains that the coiled power cord hooks to the rv and goes to the female trailer connector, that comes with the power cord, that can be installed on the front of the towed vehicle. But it requires a wiring harness to plug into the rear of the female connector to wire into the towed vehicle, that doesn’t seem to be listed as available from trailer. The video is misleading in that you have all you need to finish the connection to the towed vehicle
by:
I'm buying another as a spare.
by:
Arrived quicker than I expected which is great. Interesting that it comes with a 7 way plug, but it doesn't come with the corresponding male plug. This, to me, makes no sense. I guess someone thinks that there is a receptacle plug just hanging out on either the coach or the towed vehicle.
Just know that you will probably need to drop another 20 bucks to buy the plug and harness to compete the install.
by:
These are well made and stronger than I thought they would be. With the installation video I feel I can do the job easily.
by:
Nicole was patient, helpful, and extremely pleasant
by:
Just what I was looking for and in the correct color
by:
Once again one email to etrailer and I get a response within a day with answers to what I need. So easy and fast. You are the best!
by:
I hate to sound like a broken record every time I give a review, but the service from you guys and follow up is always top notch. You get a 10 in every department.
Thank you
Otis Jackson
by:
The product is exactly as advertised and the staff is both knowledgeable and helpful. It was a pleasure doing business with them.
Brian profile picture

Brian

12/10/2022

very well

by:
Great seller. Fast shipping and good communication!
by:
Great price! Fast shipping!
by:
Looks like its gonna work
by:
Great product. And excellent price and service.
Jerry profile picture

Jerry

8/20/2024

Working great. No problems with it.

by:
The cord is exactly as advertised and initial quality seems very good. Haven’t had any issues in the first year but a product like this should last minimum 3 years so it’s too early for a review in my opinion. So far so good, hopefully this one doesn't disappoint.
by:
Ya'll have been great with all my purchases. That you for the help that Ya'll have given me.
by:
Jimmie profile picture

Jimmie

2/11/2025

Still working great

Robin H. profile picture
Etrailer Expert

Robin H.

2/11/2025

@Jimmie great!
by:
excellent quality and quick delivery, great service and I'd highly recommend to everyone
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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Wilson B
Updated by:
Wilson B
Employee Amanda K
Updated by:
Amanda K
Employee Eric H
Written by:
Eric H

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