Search  for anything...

MICTUNING Heavy Duty 7 Way Plug Inline Trailer Cord with 7 Gang Junction Box - 8 Feet, Weatherproof

  • Based on 6,590 reviews
Condition: New
Checking for product changes

Buy Now, Pay Later


As low as $7 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

Eligible for Return, Refund or Replacement within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: 20 left in stock
Fulfilled by Amazon

Arrives Thursday, Nov 21
Order within 16 hours and 11 minutes
Available payment plans shown during checkout

Size: 8FT


Features

  • TIDY YOUR WIRE HARNESS - 7-way 100% copper blade molded into a heavy duty plug, provides a fast and simplified way for wires connection as well as keeping all your trailer wiring in order.Cautions: Pls read the plug diagram carefully and refer to the diagram to install this 7 way plug.
  • CONVENIENT TRAILER WIRING - sturdy junction box with color marked 7-poles that can be easily identified, gives you more convenience for wiring left/right turn light, brake signal lamp, reverse light, tail light, etc.
  • GOOD CONSTRUCTION - adopted flameproof ABS junction box and good conductivity copper with solid cord, stronger and rugged, perfect for RVs, trailers, campers, caravans, food vans and other towed vehicles.
  • FLEXIBLE CONNECTION - 8FT long cord with soft and durable PVC housing that offers you plenty of flexibility to wire it from the front to the rear of your car.NOT LIKE OTHERS, ONLY 4FT OR 6FT.
  • GOOD SEALING PERFORMANCE - 4 open & 4 close rubber fitted grommets for option based on your wiring needs, making the whole junction box waterproof, dustproof and corrosion resistant. WHAT YOU'LL GET: 1 x 7-Way Trailer Plug with Junction Box, 4x Open Grommets, 4x Close Grommets, 1x Waterproof cover
  • SATISFACTION DEFENDER - Buy with confidence, We stand behind our products all the time, 30 days Money Back/Replacement, Worry-free 24-month Warranty, Within 4 Hours Friendly Response,Lifetime Customer Support

Color: Black


Brand: MICTUNING


Voltage: 125 Volts


Wattage: 800 watts


Item Weight: 3 Pounds


Product Dimensions: 80 x 2 x 1 inches


Item Weight: 2.97 pounds


Item model number: MIC-TWB-031


Is Discontinued By Manufacturer: No


Date First Available: September 8, 2016


Manufacturer: MICTUNING


Country of Origin: China


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Nov 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Very nice!
Size: 8FT
Easy to install and attach all wires. Looks great. All lights work just like they should.
Reviewed in the United States on April 21, 2024 by Bryan Bryan

  • Buying for All My Trailer's!
Size: 8FT
This product not only Clean's everything up , but made testing a breeze . At first I had thought maybe this would not be as waterproof as they say . I was WRONG ! Dumped a Gallon of water for testing purposes and it held great . I have 4 trailer's that will all have this now . Instructions were straight forward and easy to follow along with . Sometimes with these you will get cheap thin wire inside where this was a good thick wire . ... show more
Reviewed in the United States on March 18, 2024 by Steve O

  • More reliable than the OEM junction box on a 2018 Solitude.
Size: 8FT
My 2018 Solitude (bought used) had a standard indoor, 4x4x2" junction box above the 5th wheel pin for connecting the trailer cord to the trailer. Not waterproof certainly and the previous owner (I assume - I hope Grand Design did not do something this cheap :-( ) had done a terrible wiring/soldering job. This junction box is at least water resistant, there are screw terminals for each of the 7 pin cable wires. Just crimp on a ring connector and the color codes worked pretty well. BTW, this worked fine for 2000 miles in Feb 2024 but then I was getting errors to the brakes - the trailer brakes would shut off which made stopping the trailer "interesting". I did not find a obvious open in the brake line but in the driver wheel well on my Ram 3500, there is a plug connector and I wiggled it and pressed it together good and that seems to have solve the problem. One would think RAM would put better quality connectors in enriovnmentally dirty spots (like a wheel well), but apparently not. ... show more
Reviewed in the United States on February 23, 2024 by J. Schultz

  • Nice kit with most everything you need
Size: 8FT
Lots of reviews talking about incorrect writing, I can't really speak to that as I don't know what they received. I can tell you that on the one I received the color code matched the documents, and also matched the existing color codes on our travel trailer. I didn't have a terminal block on the trailer to start with, so my installation took quite a while. Make sure you have all the ring terminals you need before starting! During the install I really appreciated that they had color coded the terminal posts, that helped tremendously. Also really liked the spare plugs they included for the various openings, it gave a lot of flexibility to the install. Can't really say if it will be waterproof, but it is replacing a conduit box that was wide open, so it should be better! I don't have a lot of faith in waterproof boxes as I feel it is easy for water to get in and become trapped actually making it worse. I added a 1/8" hole at the bottom of the trailing edge to help with equalization and to drain anything that may accumulate. Overall very happy with the quality, will definitely buy again if I need a new plug/cord in the future. ... show more
Reviewed in the United States on May 30, 2022 by David H.

  • Installation was as easy as expected, works well.
Size: 8FT
I bought this trailer cord with junction box a few years ago. It was a fairly simple installation and I really liked the nice long cord. My trailer stays outside and since the installation I have never had any issues with connections to lights or brakes. I am very happy with this purchase given it's fair price. Would buy again! ... show more
Reviewed in the United States on March 20, 2024 by Jaren H

  • Exactly what I was looking for to wire trailer brakes.
Size: 8FT
I let’s start with the important concern most will have regarding the quality. This feels great in hand, heavy duty, and UV quality sheathing to protect the wiring. As a former Master Technician and Engineer the past 30 years I can say without a doubt this is a quality product. This doesn’t come with full instructions, but I do. 1.) most of you will want an 8ft or shorter harness, and the box will be mounted up front. 2.) You may need to reuse your existing 4 wire for lights and add a duplex wire for the brakes, or you’ll need 6 wires approx 25ft long for a 17’ flat trailer. 3.) If starting with existing 4 wire than the Green is for the left turn signal and Yellow is for the right. 4.) The white wire is your ground and the brown wire is for your running lights. 5.) Unless you run backup lights or a 12v feature (center wire) you will only use 6 of the 7 wires. 6.) The color coding for the harness is slightly different than a 4 wire so you’ll connect the above colors according to the diagram provided. 7.) when wiring the trailer brakes you will connect one wire to white/black and the other wires to blue. So for a tandem axle you’ll have 8 wires going into 2. You probably want to run these in series and up one side of the trailer chassis. 8.) The white wire Is connected to chassis ground and the blue wire connects to the green In the box which is blue inside the vehicle to your PBC/TBC. Why these colors are not universal through idk. Might even vary on your application. Nothing complicated here. The worse part is getting on your back to wire underside of trailer if needed. Great product, Good Luck. ... show more
Reviewed in the United States on September 1, 2023 by Arianna

  • Color match
Size: 8FT
No color match for my vehicle BUT, I used markers to match mine.
Reviewed in the United States on April 24, 2024 by Charles

  • I bought two of these
Size: 8FT
How about Trudy’s I bought the first one used it on my trailer and then I had to do the car carrier trailer. I got the same set up easy to wire up easy to run.
Reviewed in the United States on April 11, 2024 by Amazon Customer

Can't find a product?

Find it on Amazon first, then paste the link below.