Search  for anything...

OPT7 Easy Connect USCAR 7 Pin to 4 Pin Harness with Reverse Wire, 4ft Trailer Extension Wiring Connector Adapter for Trucks, Pickups, Trailers, Compatible with Redline LED Tailgate Light Bar

  • Based on 328 reviews
Condition: New
Checking for product changes

Buy Now, Pay Later


As low as $9 / 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

This item is eligible for return 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: In Stock.
Fulfilled by Amazon

Arrives Sunday, Nov 24
Order within 10 hours and 7 minutes
Available payment plans shown during checkout

Size: 7 Pin to 4 Pin + Reverse Wire


Features

  • [HASSEL-FREE SETUP] Easy to install; No cutting! No splicing! Add this trailer wiring harness to an existing Seven (7) Pin Connector in your vehicle and equip it with an extra standard 4-pin with reverse light to the trailer wiring connector.
  • [TRUE PLUG & PLAY EXPERIENCE] With our 7-pin to 4 connector +reverse wire the connecter are able to connect into our tailgate light bar or other 4-pin connector/ trailer with no splicing required.
  • [ALLOW MULTI-FUNCTION] With the multi-function signal to connecting Ground, running left/right turn brake, and reverse light signal.
  • [EASY GRIP] Plugging in your trailer wiring and trailer lights is easy with the ergonomic design of this vehicle socket. It features a tab on top for a better grip when plugging into your trailer or unplugging.
  • [READY FOR ALL WEATHER] The 16-gauge heavy-duty wires with pure copper trailering wires provide reliable power and a stable electrical connection. Heavy-duty PVC, dual-mechanism 7-pin wire security system, and rust-resistant terminal construction enable stable electrical conductivity; combining the construction with a weatherproof cap makes it READY for all road conditions.

Brand: OPT7


Vehicle Service Type: Trailer


Special Feature: 7 Way to 4 Way with Reverse Wire, 4ft Trailer Extension Wiring Connector Adapter, Tailgate Light Bar, OPT7 Harness USCAR See more


Item Dimensions LxWxH: 1.69 x 1.69 x 43 inches


Product Dimensions ‏ : ‎ 1.69 x 1.69 x 43 inches; 8.1 Ounces


Date First Available ‏ : ‎ November 16, 2023


Manufacturer ‏ : ‎ OPT7


Best Sellers Rank: #10,777 in Automotive (See Top 100 in Automotive) #27 in Trailer Connectors


#27 in Trailer Connectors:


Customer Reviews: 4.6 4.6 out of 5 stars 328 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Nov 24

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


  • Ease of installation
Size: 7 Pin to 4 Pin Connector
This is a plug and play kit, It easily plugs into the harness going into your 7 pin trailer plug to give you hidden 4 pin flat connection
Reviewed in the United States on January 16, 2024 by Gil James

  • Perfect
Size: 7 Pin to 4 Pin Connector
I used this to add a third brake light to my cargo rack. Everything fit perfectly, there was plenty of wire with the kit, and everything works as intended. Pics to follow.
Reviewed in the United States on May 14, 2023 by Clay Holloway

  • Easy to use
Size: 7 Pin to 4 Pin Connector
Used this wiring harness on a previous pickup so simple to install and have the use of all connections for ur trailer
Reviewed in the United States on August 25, 2023 by michael markowski

  • Very good quality
Size: 7 Pin to 4 Pin Connector
Fit perfect with the factory wiring harness.
Reviewed in the United States on September 28, 2023 by Poppy

  • Did not work on my 2021 Silverado
Size: 7 Pin to 4 Pin Connector
Great product, easy install, just didn’t want to work with my 2021 Silverado. The light bar seemed to be shorted out, until I noticed the codes on my dash popping up from connecting this harness. Disappointed that I have to search for another.
Reviewed in the United States on August 31, 2023 by Bradley H.

  • Works
Size: 7 Pin to 4 Pin Connector
It's nice since I have the light strip under my tailgate. Now the plugs on my bumper are free to use with a trailer whenever I need & don't have to unplug anything else
Reviewed in the United States on January 14, 2024 by Travis Freiwald

  • Works
Size: 7 Pin to 4 Pin Connector
Again, something for the husband's truck. Because apparently all these fancy light strips.cant just plug into what the manufacturer already put on the bloody truck. 🙄 beginning to wonder about this project truck of my.husbands.
Reviewed in the United States on December 2, 2023 by Ivy wolf

  • Nice and Perfect
Size: 7 Pin to 4 Pin Connector
It hooked up perfectly with trailer harness on my 2021 ram pickup.
Reviewed in the United States on October 12, 2023 by Leon Enochs

Can't find a product?

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