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7 Way Plug Inline Trailer Cord with 7 Gang Junction Box - 8 Feet, Heavy Duty Trailer Connector Cable with Waterproof Junction Box Trailer Wiring Harness for RV Trailers and Campers

Free shipping on orders over $29.99

$39.99

$ 17 .99 $17.99

In Stock

1.Size:8 Feet (without Junction Box)


About this item

  • Optimize Trailer Wiring: IsleWire 7-way trailer wiring harness kit features a convenient color-coded wiring system. With 7 unique color coding terminals and wires, it's a breeze to swiftly identify the function of each wire by its color. Bid farewell to perplexing wiring diagrams and streamline your wiring process effortlessly.
  • Flexible and Efficient: 8FT trailer extension cord boasts a soft and durable PVC housing, providing ample flexibility to wire it from the front to the rear of your vehicle. The pure copper material for trailer cable cord ensures excellent conductivity and low resistance, promoting energy efficiency.
  • Durable and All-Weather Use: ABS sturdy junction box of the 7-Way trailer cord is built to endure diverse weather conditions, shielding wire connectors from rain or moisture damage. This prolongs the lifespan of the trailer wires and ensures durability in challenging environments.
  • Versatile Applications: Perfect for trailers, RVs, campers, caravans, food trucks, and other towed vehicles. Ensures a stable connection of taillights, brake lights, reverse lights, turn signals, and auxiliary power. Our trailer wiring kit ensures your vehicle remains connected and powered, making it the ideal accessory for any outdoor enthusiast.
  • Trusted Brand:We stand behind our product with a 1-year replacement and return guarantee, along with free lifetime technical support. Count on IsleWire 7-way trailer cord with junction box to ensure the safety of your equipment.



Product Description

trailer wiring harness
trailer accessories
7 way trailer plug
trailer wire

trailer wiring kit

Unique Color Coding

Color-coded wires for easy identification and simplified wiring

7 way trailer wire

Excellent waterproof sealing

Junction box prevents wire connectors exposure, extending trailer cable life

7 wire trailer cable

Easy to Use

Finger lugs at the end of the locking plug for effortless installation and removal

trailer junction box

Flexible Operation

Open and closed rubber grommets provided for flexibility in choosing your convenient wiring position

7 way trailer junction box
7 way trailer cord

Chris
August 15, 2025
Highly recommend this product. Easy to install and built very well. Lots of room in the junction box for all the wire connections. The outer sheathing on the cord is nice and thick and seems like it's going to hold up for a long time.
Brady Mann
July 18, 2025
This product was perfect for what I needed for a new trailer wiring. High-quality.
Jared S
July 12, 2025
Easy install for setups that need this specific junction box.
Aggie Biker
July 8, 2025
Super easy to install. Color code correct. Better quality than the Curt plug I replaced.Recommend
Mike D
April 14, 2025
I purchased this to replace the similar plug on a new to me trailer that had the wires cut. That plug fit my truck socket ('22 f350 12k miles) loose as well. I checked it against 2 other trucks, it fits loose in each. How loose? The spring loaded receptacle cover is the retention to hold this in. Hold that open and the plug falls out of the socket. What does the mean for you? It means the wires do not make a good connection and will become hot, your lights will blink or go out, your brakes on the trailer will be poor, and the plug may melt. This is especially true in the northeast salt states. What is my experience with trailers? I own 6 and performed full trailer service for more than 10 years on 3500 to 18000 lb trailers. From full frame repairs, axles, brakes, and wiring. I was hoping to save some time with a nice sealed plug and wire harness. Nope, getting returned and replaced with with an old school plug and wire set. Did I get a bad one? or 3? Yeah I bought 3, all the same. Bummer
idahomars
March 30, 2025
If you have a habit of ruining the plug portion of your trailers, this is a great solution. Once you wire this box into your trailer, when end of the cable gets drug down the highway and needs to be replaced - its super easy to just undo the box and attach a new pig tail. No reason to rewire any other part of the trailer.However, even though the cables are color coded and well marked, the colors do not follow what I would consider 'standard' color guides. For example, every trailer that I have ever wired in the past uses standard colors (Yellow - Left Turn) (Green - Right Turn) (Brown - Running lights) etc.It will still work fine, you will just need to attach the trailer wires to the appropriate wires in the junction box (For example my trailer had a yellow wire for the left turn signal - I had to attach that to the 'Red' cable in the junction box.)
Donald Glover
January 22, 2025
Work well
Dawnie
January 20, 2025
I buy a brand-new camper and it is all cheap wiring. Into regular electrical boxes. It isn't like mine was any different either. It is a top-of-the-line couples' camper. They just do this and install the cabling into regular metal electrical boxes. This provides you a new plug for your RV. Sealed where the connections are. Nice lugs to attach your wires cleanly. If you are looking at this listing it probably bothers, you how bad it looks. This was easy to install in the same area. Looks a lot better and functions well.
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