SKU: 42247790863

7-Way Trailer Wiring Harness with Junction Box – 8FT, Weatherproof, RV-Standard, Heavy Duty TC78W

Sale price$30.56 Regular price$33.95
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 14 - Sep 19

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For Your Every Summer RSVP, with Code: SUMMER15

Description

7-Way Trailer Wiring Harness with Junction Box – 8FT, Weatherproof, RV-Standard, Heavy Duty TC78WSimplify and secure your trailer's electrical system with this Heavy Duty 7 Way Trailer Wiring Harness featuring an 8FT cord and weatherproof junction box. Built for durability and compatibility with RV standard configurations, this setup is ideal for RVs, trailers, food trucks, and other tow behind vehicles. Key Features All in One Wiring Harness Pre molded 7 way copper blade plug combined with a rugged junction box provides fast, secure, and

Simplify and secure your trailer's electrical system with this Heavy-Duty 7-Way Trailer Wiring Harness featuring an 8FT cord and weatherproof junction box. Built for durability and compatibility with RV-standard configurations, this setup is ideal for RVs, trailers, food trucks, and other tow-behind vehicles.

🔧 Key Features

  • All-in-One Wiring Harness
    Pre-molded 7-way copper blade plug combined with a rugged junction box provides fast, secure, and organized wiring for turn signals, brake lights, tail lights, and auxiliary power.
  • Color-Coded 7-Gang Junction Box
    Solid ABS housing with clearly marked terminals simplifies installation and reduces guesswork for all standard 7-way RV applications.
  • Heavy-Duty & Weatherproof Design
    8-foot cord made of 100% pure copper wire housed in a durable, flameproof PVC jacket. Waterproof grommets seal the box and protect wiring from dust, corrosion, and the elements.
  • Flexible Installation Options
    Comes with 4 open and 4 closed grommets to adapt to your specific cable layout. Built to last for rugged use on the road or worksite.

⚙️ Specifications

  • Plug Type: 7-Way RV Standard (Please verify plug layout)
  • Cord Length: 8 Feet
  • Wiring Material: Pure Copper
  • Junction Box: Flameproof ABS with weatherproof grommets
  • Use Cases: RVs, utility trailers, food vans, horse trailers, boat trailers, and campers
  • Voltage: 12V Systems

🧰 Compatible With:

  • Travel trailers
  • Fifth wheel campers
  • Horse and boat trailers
  • Food trucks
  • Utility haulers and car haulers
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 42247790863

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4.4 ★★★★★
Based on 22 reviews
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Product Reviews
T
Verified Purchase
TTG
Louisville, US
★★★★★ 1
Not so good - oil splashes all over !!!
Style: 16 Quart Drain Pan
I am SO glad I just saw this pop up in my "purchased" items category...I am not only a Do it yourselfer but I also perform service work for a group of clients as well and I have to say I had a version of this before and threw it out after many years of service due to the fact it started dripping/leaking and I did not want to waste time trying to find it! with that said I purchased this and "What a mistake" every time I change the oil if it does not hit exactly the right angle or area the oil just ricochets off the surface and splashes all over the garage surface (especially when working with 0w20 type oil - thin)...I think this one will be seeing the can soon as well even after only 30-40 uses!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
I
Verified Purchase
Ivan
West Palm Beach, US
★★★★★ 4
Rare Small Leaks
Style: 16 Quart Drain Pan
These work well but i have noticed that they leak in small amounts from time to time. Can be a little annoying when transporting used oil or coolant to be recycled.
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Reviewed in the United States on December 6, 2025
T
Verified Purchase
Thaisa Santos
Los Angeles, US
★★★★★ 5
Works great
Style: 16 Quart Drain Pan
Works great for our Hyundai genesis coupe and 4Runner oil changes !
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
C
Verified Purchase
Chris
Boise, US
★★★★★ 5
Great pan.
Style: 16 Quart Drain Pan
Great oil pan. Sturdy and doesn’t leak. Really easy to use.
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Reviewed in the United States on April 27, 2026
T
Verified Purchase
TotallyR4ndom
Cuba, US
★★★★★ 5
Good
Style: 16 Quart Drain Pan
It's been good so far. Favorite part is how much it can hold, it won't overfill.
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Reviewed in the United States on May 4, 2026

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