bing tracking image
Customer Service My Orders
  1. Trailer Wiring
  2. Mighty Cord
  3. Trailer Connectors
  4. Trailer End Connector
  5. Plug and Lead
  6. 7 Blade
Mighty Cord 7-Way RV Style Trailer Connector w/ Molded Cable - Trailer End - 8' Long
Add to Cart
etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
SCHEDULE AN INSTALLATION
go
Mighty Cord

Mighty Cord 7-Way RV Style Trailer Connector w/ Molded Cable - Trailer End - 8' Long

Part Number: A10-7W8
93 Reviews | 11 Questions
$44.27
Retail:$62.38
You Save: 29%
 Trailer Wiring
Add to cart
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.
By submitting this form, you understand and agree to our Terms of Sale, Website Terms of Use and Privacy Policy.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

spin image icon
mighty cord trailer wiring connectors
mighty cord trailer wiring connectors end connector
mighty cord trailer wiring end connector a10-7w8
mighty cord trailer wiring connectors 7 blade a10-7w8
mighty cord trailer wiring connectors
mighty cord trailer wiring connectors 7 blade 7-way rv style connector w/ molded cable - end 8' long

Show All (7) Product Images

Show Fewer Product Images

In Use/Installed

0 trailer wiring mighty cord end connector a10-7w8
0 trailer wiring mighty cord connectors end connector on a vehicle
0 trailer wiring mighty cord connectors 7-way rv style connector w/ molded cable - end 8' long
0 trailer wiring mighty cord 7 blade a10-7w8

Show All (4) In Use/Installed

Show Fewer In Use/Installed

Customer Photos

Mighty Cord 7-Way RV Style Trailer Connector w/ Molded Cable - Trailer End - 8' Long customer photo

Show All (1) Customer Images

Show Fewer Customer Images

Videos

Show All (2) Videos

Show Fewer Videos

etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
SCHEDULE AN INSTALLATION
go
Replace the 7-way, blade-style connector on your trailer with this plug and lead to sync the brake lights and turn signals. Cable hardwires to your existing trailer wiring. Curved grips make it easy to disconnect from your vehicle's 7-way socket. Great Prices for the best trailer wiring from Mighty Cord. Mighty Cord 7-Way RV Style Trailer Connector w/ Molded Cable - Trailer End - 8' Long part number A10-7W8 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (93)
  • Q & A (0)
  • Related Parts
  • Photos

Mighty Cord Trailer Wiring - A10-7W8

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

Replace the 7-way, blade-style connector on your trailer with this plug and lead to sync the brake lights and turn signals. Cable hardwires to your existing trailer wiring. Curved grips make it easy to disconnect from your vehicle's 7-way socket.


Specs:

  • Harness length: 8'
  • Wire gauge:
    • Brown, red, yellow, and green: 14 AWG
    • Blue: 12 AWG
    • Black and white: 10 AWG
  • Wiring configuration:
    • Brown: passenger side brakes/turn signal
    • Red: driver side brakes/turn signal
    • Green: tail lights
    • Yellow: auxiliary/reverse lights
    • Blue: electric brakes
    • Black: 12V battery charge
    • White: ground
  • 1-Year warranty


Features:

  • 7-Way, blade-style connector hardwires to your trailer and plugs into the 7-way on your vehicle
    • Syncs your trailer's brake lights and turn signals with your tow vehicle's
  • Curved finger tabs allow for simple disconnect
  • Molded PVC housing with rubber sheathing protects the terminals and wires from moisture and debris


A10-7W8 Mighty Cord 7-Pole Blade-Style Molded Trailer Wire Connector - 8' Harness

Compare to Hopkins H20046

Compare to Bargman BA74CR





Customers Who Purchased This Trailer Wiring Also Bought...



Customer Satisfaction Score:

Ratings & Reviews

4.7

93 reviews
5 Stars
(78)
4 Stars
(9)
3 Stars
(3)
2 Stars
(1)
1 Star
(2)
Review Sort Icon
by:
I actually haven’t installed my new 7 way camper trailer connector yet. It looks simple enough. It’s exactly what I ordered and it came in a very timely manner with updates on the arrival from shipping. So far I’m very happy with it.
by:
High-quality part, fast shipping and fair cost. Excellent service from Paula T. I highly recommend etrailer for your trailer needs. Thanks!
by:
I used this connector harness to add electric brakes to my trailer. With the color coded wires, it was an easy task to connect everything up. The socket connects up to the 7 way factory connector on my F150 pickup. I recommend this connector harness for similar applications.
Customer Large Image
Customer Image
Click to Enlarge
Tomd profile picture

Tomd

7/24/2020

This is a very durable connector and has served me well over the last year.

by:
My husband was able to replace the old plug that had been pinched.
by:
Good quality
by:
Perfect easy install
by:
It was an easy wire for wire replacement.
by:
Looks good
by:
Very nice cord. Color matched my rv perfectly!
by:
The Mighty Cord 7-Way RV Style Trailer Connector w/ Molded Cable was spot on! After perusing through numerous websites and [online vendor] looking for this very specific cable and molded connector with 10,12, and 14 gauge wires, I was finally directed to Valterra which actually showed the product on their website. But they do not sell the product. The gal who I talked to told me to go to etrailer.com and Bingo I found what I needed. Shipping was fairly quick and after comparing the wires on the existing cable to Mighty Cord the gauges and colors match--making splicing a breeze!
Mittelrl profile picture

Mittelrl

4/29/2023

The product has performed flawlessly! The key to the satisfactory results of this male connector with cable was bending the plate on which the female connection is attached on the back of our Expedition perpendicular to the ground. When the two are solidly coupled, the female receptacle cap grabs onto the top “horn” on the male plug securely.

by:
Works great
by:
This cable is much better than the one on the trailer it is replacing. The cable and the plug is heavy duty and has the correct color coded wire. Should make for an easy installation with long lasting quality.
by:
Cable recd today without any labels, paperwork, or schematic detailing what the normal wiring represents.
All was not lost as I searched etrailer.com & found wiring instructions for detailed usage.
Cable, wiring, & connector all of good quality.
Denver profile picture

Denver

6/10/2021

1 year later the cord has been subjected to all types of weather &amp along with road debrisfrom our motorhome. The cord still looks new. No damage to insukation or connectors. Thanks for delivering a lasting product.

by:
Idiot proof & great quality
by:
This worked very well to replace my plug and wire that was dragged down the road accidentally. The cord is sturdy and flexible. It installed easily. After 1 year it is still working great. Be sure to use dielectric grease on the contacts.
by:
Works fine and seems to be made well. Have to push hard on the plug to seat it on the connector for the cap plug latch to engage the plug body.
Phillip G. profile picture

Phillip G.

4/18/2020

I purchased this item to provide charging for the boat battery while the boat is towed. No issues with the item currently.

by:
I ordered a 7-way trailer wire for my camper to replace a damaged one. Easy installation and worked as if it was factory installed. Very pleased with this product and etrailer.com
by:
Worked perfectly after I had shredded my original. (Here's a tip...don't let the cable drag while towing :) )Quickly installed using existing wire nuts. 30 minutes start to finish. The plug end seems like it doesn't lock in quite as securely to the truck socket as my original did. Time will tell
by:
After damaging my electrical cable that connects the motorhome to my truck in-tow. I ordered a new 7-pin cable with connector and a 6-pin connector. I received both within four days and after an hour of rewiring I am back in business. Thanks for the great service etrailer.
by:
Contacts corroded worse than anything I have ever seen in my life after one dip in the ocean. Might be acceptable for fresh water but it's definitely not ok for saltwater use.
Jenny N. profile picture
Etrailer Expert

Jenny N.

2/20/2022

My recommendation to best protect trailer wiring from salt water is to use split loom, spiral wrap or braided sleeving to protect your trailers wiring. Use heat-shrink tubing - the kind with the melting inner wall - or liquid electrical tape. On incandescent-bulb sockets, use dielectric grease to protect against water and eventual corrosion. We offer wire loom, heat shrink tubing, liquid electrical tape part # SWC50122, and dielectric grease part # 11755.

Helpful Links

dept-pg-Electrical_Tools-pt-Heat_Shrink_Tubing.aspx

dept-pg-Wiring-pt-Wire_Loom.aspx

Doug profile picture

Doug

2/16/2023

The only less than stellar part Ive purchased from etrailer

by:
I just installed it. Haven't tried it yet. So far so good.
by:
Exactly what I needed and fast shipping. Great replacement for my OEM pigtail.
by:
Easy to install the connectors are smaller than original and hard to push in but will get easier with more use.. overall a good replacement
by:
A perfect replacement for my RV trailer connector. Very easy to install. Works as intended.
by:
Quality heavy duty molded cord. Easy to install. Had to replace previous cord that dragged on highway. Order shipped immediately and arrived well packaged.
25
93
true
Show More Reviews

See what our Experts say about this Mighty Cord Trailer Wiring

Do you have a question about this Trailer Wiring?
  • Recommended 8' long 7-Way RV Style Trailer Connector w/ Molded Cable
    Yes, it does! You'll want the 8' long Mighty Cord 7-Way RV Style Trailer Connector w/ Molded Cable item # A10-7W8. To keep all of your connections in a secure organized place, I recommend the Trailer Wiring Junction Box item # 3375601100.
    view full answer...
  • Replacement Parts Needed For A 1977 W-W 2-Horse Horse Trailer
    Hey Greg, For the lights we would need to see some pictures and get some dimensions to pick out the correct fit. When you say plug are you referring to the 7-way cable # A10-7W8 on the trailer or the 7-way on the Silverado # HM40975? The compartment door handle/latch will likely also need to be completely replaced. You can remove the backing plate to measure the cutout hole and then we can see if there's a compatible fit available.
    view full answer...
  • Solution for GM Truck that Solar on Trailer Prevents Brake Controller
    Hey Gary, I have heard about the really bizarre issue the new GM trucks have when using a solar setup on a trailer. The last I looked into it GM had some type of recall going where they could reprogram it. I believe there is a tech bulletin out for it and a GM dealer can get it taken care of and allow your brake controller to work.
    view full answer...
  • Wire Missing For 7-Way Trailer Side Connector
    I have attached the wiring diagrams for the different 7-way connectors used on trailers. I find it best to not reference wiring by color but instead function since depending on who made the wiring harness and who wired the trailer they can vary. As the white wire is typical of a ground connection the person who wired the trailer the first time may have not used it hoping that the ball connection would provide the ground that they needed to the vehicle. You may need to replace the 7-way...
    view full answer...
    Image 1 for
  • How Is the Mighty Cord 7-Way RV Style Trailer Connector w/ Molded Cable Pinned
    In regards to replacing a trailer connector on a trailer with an option like the Mighty Cord 7-Way RV Style Trailer Connector w/ Molded Cable part # A10-7W8, you need to match wires by function not color. In other words, if there is a green wire on the trailer, you should apply power to that wire to see what light it activates. Then attach this wire to the trailer connector based on the function of the light and how it matches up with the diagram for the trailer connector attached below....
    view full answer...
    Image 1 for
  • Wiring the Traditional Trailer 7-Way to 7-Way RV Standard
    The Mighty Cord 7-Way RV-Style Trailer Connector, # A10-7W8, will have the same wiring configuration as the Hopkins 7-Way Molded Trailer Wire Connector, # H20046. I recommend the 7-Way Molded Trailer Plug with Junction Box , # HS381-9000. The junction box will allow to easily connect your trailer wiring to the new 7-way cord. Using 7 of the Ring Terminal - 12-10 Gauge Wire, # 44-5310A, you can connect your trailer wiring to the junction box. The box can attach to the trailer and house...
    view full answer...
    Image 1 for
  • How to Connect 2019 Mazda CX-9 to 7-Blade Connector
    Hi Jeannie! You'll want to start by testing the connections on your vehicle and your trailer. The best option is to use a multimeter if you have one, or you can use a circuit tester like Hook Probe Circuit Tester # PTW2993. You should test this on each individual connection on the vehicle side as well as the trailer side to identify where you're losing your power. If the issue is on the trailer's end, you can replace an individual wire or go with a new 7-way connector like Mighty Cord...
    view full answer...
  • How To Wire A Trailer To Connect To The Tow Vehicle Electrical System
    When wiring up your trailer you'll want to install a junction box # e99009 to have a nice organized place for your wiring connections. The 7-way cable # A10-7W8 will go from the junction box and connect to the 7-pole socket on your tow vehicle. Each wire is labeled in the wiring diagram for the cable and will go to the corresponding posts in the junction box. From the junction box you'll then run the wires to you battery and other corresponding components. I've attached a video below...
    view full answer...
  • Can the Mighty Cord 7-Way RV Style Trailer Connector Be Trimmed
    Yes, you can trim the Mighty Cord 7-Way RV Style Trailer Connector part # A10-7W8 down to your specific length. If you have a set of heavy duty snips you can simply cut the cord at once but if not you'll need to use a razor to remove a section of the jacket and then snip each wire individually.
    view full answer...
  • Parts Needed to Make 8 foot Long 7-Way Extension
    The part 50-67-210 really would be considered more of an "umbilical" adapter between two 7-way sockets like what are used in flat towing. What you are in need of is more of an extension which would have a plug on one end and a socket on the other. You could cut off one of the plugs and then wire the harness to the # HM48480 and have more of a traditional extension. Or wire the # HM48480 to the # A10-7W8 instead.
    view full answer...
  • Recommended Trailer Side 8 Foot Long 7-Way Harness with SAE Listing
    I reached out to my contact at Mighty Cord and she stated that they don't have any particular safety listings for their 8 Foot 7-Way # A10-7W8. For an 8 foot long trailer side 7-Way that meets SAE standards we do have the Hopkins # HM20041. I have attached a short video review on this product below that you can also check out.
    view full answer...

Do you have a question about this Trailer Wiring?


Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Brent H
Installed by:
Brent H
Employee Jameson C
Expert Research:
Jameson C
Employee Joshua S
Video by:
Joshua S
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

At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.