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  4. Trailer End Connector
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Mighty Cord 7-Way RV-Style Trailer Connector w/ Molded Cable - Trailer End - 10' Long
Mighty Cord

Mighty Cord 7-Way RV-Style Trailer Connector w/ Molded Cable - Trailer End - 10' Long

Part Number: A10-7W10
$59.49
Retail:$75.38
You Save: 21%
Trailer Wiring
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This molded, 7-way, RV-style, trailer-end connector allows you to connect your trailer to your vehicle. Durable molded rubber construction and corrosion-resistant terminals withstand the elements. Great Prices for the best trailer wiring from Mighty Cord. Mighty Cord 7-Way RV-Style Trailer Connector w/ Molded Cable - Trailer End - 10' Long part number A10-7W10 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (108)
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Mighty Cord Trailer Wiring - A10-7W10

  • Trailer Connectors
  • Trailer End Connector
  • Plug and Lead
  • 7 Blade
  • Mighty Cord

This molded, 7-way, RV-style, trailer-end connector allows you to connect your trailer to your vehicle. Durable molded rubber construction and corrosion-resistant terminals withstand the elements.


Features:

  • 7-Way blade-style plug allows you to connect your trailer to your vehicle
  • Durable molded rubber construction
  • Corrosion-resistant terminals withstand the elements
  • Simple installation
    • Hardwire to existing trailer wiring


Specs:

  • Harness length: 10'
  • Wire gauges:
    • Red, brown, green, and yellow: 14 gauge
    • Blue: 12 gauge
    • White and black: 10 gauge
  • Wiring configuration:
    • Yellow: auxiliary and reverse lights
    • Green: tail lights
    • Brown: right turn and brake lights
    • Blue: electric brakes
    • Black: 12V battery charge
    • Red: left turn and brake lights
    • White: ground
  • 1-Year warranty


A10-7W10 Mighty Cord 7-Way Blade-Style Molded Trailer Wire Connector - 10'

Compare to Hopkins HM20048

Compare to Bargman 50-67-005 and BA68HR





Customer Satisfaction Score:

Ratings & Reviews

4.7

108 reviews
Review sort icon
This molded, 7-way, RV-style, trailer-end connector allows you to connect your trailer to your vehicle. Durable molded rubber construction and corrosion-resistant terminals withstand the elements.

by:

Thank you for your excellent service. I needed the wiring harness urgently overnight and Nicole in customer service made sure it would ship and get to me on time.



by:

Customer service is great with etrailer I appreciate the time I spent of the phone with the gentlemen he was very knowledgeable he was a good communicator and very courteous. I will order more parts from them. 1st impression goes along way.



by:

Grateful I found this website, your web page is great for finding the products I needed, the price was great and free shipping on top of that. The product came quickly and although I haven't installed it yet I plan on doing that this weekend. I am very pleased with your company.



by:

Direct replacement for my trailer cord. Like that it is sealed to keep the weather out.



by:

Replaced old cord with new one. Exactly what I wanted at a reasonable price. That is why I always check etrailer for parts I need on my RVs. the cord is durable and is exactly how it was explained in its description.



by:

Quality product, well built, durable and easy to install. Recommend a quality crimper or solder connections to the electrical box.



by:

Works great for a conversion lance camper plug rubber coated plug good quality product



by:

This was an exact match to the wiring of my 2009 forest river 27' salem toy hauler. I purchased the 10' cable which is 2' longer than the stock cable. I did that so I would have extra cable to add a new end to if I have troubles later on. The Product works perfectly after installation . My reason for the replacement was a failure of the stock plug end. No complaints about the stock one. It lasted 10 years which I believe is a good life span for any plug. This plug seems like with proper care and corrosion protection it should have a long life as well.



by:

My old cord had 16 gauge wire for the brakes , This took care of my week trailer brakes.



by:

I bought this to replace the worn out connector on my RV. I was happy to see that the white, black and blue wires were of a heavier gage than the other four wires since that is how the original cable on my RV is. The package arrived sooner than I expected. This will be much better than if I had just replaced the connector. No more worries if my trailer turn signals are working!



by:

Purchased this to upgrade the connection between my trailer and my truck. This cable has remained flexible and provided the length I wanted to be able to connect without hitching.



by:

This cord was a good length to replace the damaged cord on our travel trailer. It has a sealed plug connection thus eliminating the need to attach and maintain the RV-style plug on the end of the cable. This was an easy replacement.



by:

Ordering and shipping on time was great. easy installment. Only draw back is the longer I pull my trailer the more the brakes apply pressure and I have to make adjustments to keep brakes from locking up. But I would and suggest buying to a friend.



by:

The cord is of good quality and is working well. The reason for 3 stars is that the wire color to Pin location don't match the standards I have printed even ones I got with the car connector from etrailer. I just used an ohm meter to confirm which color wire connected to each pin before connecting to the trailer.



by:

Works for what we needed.. use it all the time the camper is on the truck.



by:

The delivery was reasonably fast. The service tech, Nicolas C., with whom I talked and placed the order was very knowledgeable and pleasant.
The cable is for a 5th wheel travel trailer to a 3/4 ton pickup needed to replace the factory one-foot too short cable with a connector whose female metal connections had lost their temper and thus valid connections to distribute voltage and current from the truck to the brakes, batteries, and refrigerator.
The new cable seems to have solved the problem.
The etrailer site had good wiring diagrams and installing instruction for many types of trailers.



by:

Works as expected. Nice quality



by:

Everything seems to be good quality. I thought the shipping was a little slow could have gotten here a little sooner.



by:

Arrived promptly and in described condi tion



by:

Very good quality. Replaced original cord which was too short



by:

Excellent!



by:

Not yet installed, but It appears to be better than the original that came with trailer. Stouter, better moulding. The old one was starting to crack and interior wires showing. This should fix the problem nicely!



by:

perfect length for my gooseneck horse trailer, it can reach both the outlet in the bed and at the truck bumper



by:

Nice molded plug. Appreciate the extra length. Color coding matched cord I was replacing. Always good the verify color to pins before terminating. I used cheap crimp but splices and had to replace them with Deka yellow 12-10 heat shrink but splice. Very good, highly recommend heat shrink crimp splices.



by:

Looking for the proper piece without touching and relying on advertising is a challenge. Etrailer is very good. Austin checked on me. What I received was exactly what I needed. Thanks


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See what our Experts say about this Mighty Cord Trailer Wiring

  • Wiring Configuration of Mighty Cord 7-Way Plug A10-7W10
    For the 7-way trailer plug # A10-7W10 the wiring configuration is as follows: Yellow: auxiliary and reverse lights Green: tail lights Brown: right turn and brake lights Blue: electric brakes Black: 12V battery charge Red: left turn and brake lights White: ground The 12V power and ground wires (black and white, respectively) are heavier 10-gauge wire; the blue brake circuit wire is 12-gauge and all lighting circuit wires are 14-gauge.
    view full answer...
  • Replacement 7 Way Pin Plug Wiring Pigtail For 2019 Forest river No Boundaries RV
    Hey Robert! Yes it can be a bit confusing with all the different styles, but I can help you out. It sounds like you're needing the trailer side of the 7 way plug and harness, correct? If so, I'd look at the Mighty Cord 7-Way RV-Style Trailer Connector w/ Molded Cable - Trailer End - 10' Long # A10-7W10. This can be hard wired into your 7 way wiring, and it gives you 10 feet of cable to work with. You can just run it how ever long you need and cut off the rest. The 7 way round plug is...
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  • Why Do Some 7-way Plugs Use Dual Contact Surfaces
    A 7-way (female) vehicle socket like # PK12-707E has a single blade contact; these fit in between the dual contact surfaces in a (male) trailer plug like # 54006-059, # 277-000143 or # A10-7W10 and the connector (type BB) shown in your photo. Some 7-way male plugs will use a single blade contact, such as the plug on Hopkins 7-way extension # HM20049. This item's female socket and male plug happen to both use the single contact. Both types are compatible with each other. The Bargman Double-Ended...
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    Image 1 for
  • What are the Different 7-Way RV Wiring Configurations
    There are two different styles of 7-way wiring typically seen. Traditional and RV Standard. The pins all have the same functions but the difference is the wire colors. If you check out the picture I attached you'll see the two different versions in the left and center diagrams. The 7-way part # A10-7W10 that you referenced uses the RV standard style.
    view full answer...
    Image 1 for
  • Installing Reverse Lights on Trailer Using 7-Way Connector and Wishbone 4-Way Wiring Harness
    Using the Mighty Cord Wishbone 4-Way Flat Trailer Connector - Trailer End - 25' # A10-4225VP will give you the wiring for the tail lights on each side of your trailer giving you both the running light for each side and then the stop/turn function for each side. The ground wire will connect to your trailer frame on a bare metal to metal surface. Then when using the Mighty Cord 7-Way RV-Style Trailer Connector w/ Molded Cable - Trailer End - 10' Long # A10-7W10 or similar based on length,...
    view full answer...
    Image 1 for
  • How Do I Set Up a Trailer So the Brakes Work to Triple Tow?
    Hi Jeff, To get brakes to the second trailer, you'll need to add the etrailer Trailer Wiring Junction Box part # e99009 and wire in the Mighty Cord 7-Way RV Style Trailer Connector - 10' Long part # A10-7W10 to it on the second trailer. Then you can use 10-Gauge Wire part # 10-1-1 to run from the junction box to your brakes. On the back of the 5th wheel, you'll need to add the Curt Dual Connection Socket w/Bracket part # C36GJ, plug the Pollak 4' Pigtail Wiring Harness part # PK11998...
    view full answer...
  • 7-Way and 10 Foot Wiring Harness Recommendation for Airstream Flying Cloud
    The Mighty Cord # A10-7W10 that you referenced is a great option for you. This connector and lead is made from really high quality materials that will last you a long time. The wiring also has heavier gauges of wire than other options too so it wins in that department as well.
    view full answer...
  • 7-Way Molded Trailer Connector with 10 Feet Length
    The Mighty Cord 7-Way RV-Style Trailer Connector w/ Molded Cable - Trailer End - 10' Long # A10-7W10 is what you are seeking. RV wiring is the same as regular trailer wiring as far as locations, just the wire colors differ slightly. I've attached an article to assist.
    view full answer...
  • What are the Correct Wiring Connections Between the Trailer and the Tow Vehicle
    I have attached a wiring diagram that will show the typical arrangement of the towing wiring on your vehicle and the corresponding wires on the trailer side. The basic wiring identification is as follows: Green - Tail & Running Light Black - 12V Power Brown - Right Turn and Stop Blue - Brake Control Output White - Ground Red - Left Turn and Stop Yellow - Reverse Lights I also attached an article on trailer wiring that can give you more info for you to review.
    view full answer...
    Image 1 for
  • Looking for the Rubber Boot for the 7 Pin Round Connector
    Thanks for reaching out Chris, the pics really helped. The ESCO 7-Way Trailer Plug Holder with Breakaway Cable Anchor # ES94FR is available but I'm not seeing we carry an exact replacement for the rubber boot you mentioned. Some alternate options would be: Mighty Cord 7-Way RV-Style Trailer Connector w/ Molded Cable - Trailer End - 10' Long # A10-7W10. 12 Gauge 7 Conductor Jacketed Wire - Per Foot # DW04914-1 Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector - Trailer End...
    view full answer...
  • Trailer Side Wiring For Hopkins 7-Pole and 4-Pole Trailer Connector 7-Way Plug
    The Hopkins 7-Pole and 4-Pole Trailer Connector Sockets w/ Mounting Bracket and Wiring part # HM40975-11998 does not include the wires from the connector to the trailer. The Hopkins will give you a 7-way plug on specific vehicles with a bundle of wires at the rear near the bumper from the factory. The long pigtail with different colored wires you see in the photos will connect to the factory bundle of wires. Once you have the 7-way plug installed on the vehicle you can use a trailer end...
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  • Replacement 7-Way RV Harness in Different Lengths
    There are various lengths of 7-way RV harnesses but they have 10 gauge white and black wires for the positive and negative connections. The 7-Way Molded Trailer Wire Connector - 3' Long # H20042 for example uses 10 gauge wires for positive and ground, 12 gauge wire for brake controller, and 14 gauge for the other functions. The Mighty Cord 7-Way RV-Style Trailer Connector w/ Molded Cable - Trailer End - 10' Long # A10-7W10. The same wire gauges line up for the vehicle side like the Pollak...
    view full answer...

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Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Joshua S
Video by:
Joshua S
Employee Cole B
Installed by:
Cole B
Employee Brent H
Installed by:
Brent H
Employee Chris R
Video Edited:
Chris R
Employee Mary K
Updated by:
Mary K
Employee Wilson B
Updated by:
Wilson B
Employee Halie H
Updated by:
Halie H
Employee Amanda M
Written by:
Amanda M

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