Pay in installments of $2.81 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 3 - Aug 8
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
4-Pin to 5-Pin Wiring Adapter Connector for Truck & Boat TrailerSpecification: 4 Way to 5 Pin Flat Adapter: The electrical wiring adapter converts a 4 way flat vehicle socket to 5 way flat boat trailer plug, adding in a fifth wire for the reverse lights and allowing vehicle's 4 way flat to be converted into 5 pin socket Design For Boat Trailer: 4 pin to 5 pin flat trailer plug specifically intended for boat trailers with surge brakes, 4 way flat to 5 way flat fits all vehicle models with 4 way flat connector, and
Specification:
4 Way to 5 Pin Flat Adapter: The electrical wiring adapter converts a 4-way flat vehicle socket to 5-way flat boat trailer plug, adding in a fifth wire for the reverse lights and allowing vehicle's 4-way flat to be converted into 5 pin socket
Design For Boat Trailer: 4 pin to 5 pin flat trailer plug specifically intended for boat trailers with surge brakes, 4 way flat to 5 way flat fits all vehicle models with 4-way flat connector, and your Boat trailer comes with a 5-way flat plug
Well Protected: Both of the 4 way male and 5 way female trailer connectors equips with rubber dust cover, protects the terminals from water and dust when not in use
Simple Installation: The blue wire spliced into the reverse light wire on the vehicle, 4 to 5 boat trailer hitch wiring adapter simply plugs into a standard vehicle-side 4 pin flat and trailer-side 5 pin trailer light adapter
Durable Construction: 4 pin flat 5 wire harness kit are molded and features thickened PVC wire coating materials for anti-corrosion, pure copper wires for good conductivity
Features:
Heavy-duty 18-gauge wires for strength and longevity.
Suitable for boat trailers with surge brakes.
The fifth wire (blue wire) connects to the reverse lights.
Both dust covers for dust-proof and waterproof
Durable molded plastic for long term use.
Application:
Fit For Truck & Boat Trailer
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.1 ★★★★★
Based on 11 reviews
Sort
Product Reviews
★★★★★ 5
Good quality
Size: Large, Color: (100) White / White / Pitch Gray
These hold up really well. The extra cushion in the heels helps
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 2, 2025
★★★★★ 5
My favorite socks.
Size: Medium, Color: (001) Black / Black / Pitch Gray
I love these socks. Whe. The time comes to replace them, I will be replacing them with the exact same ones.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 27, 2025
★★★★★ 5
Great socks!!!
Size: X-Large, Color: Beige/Cream/Green
Great product. Fit and comfort outstanding
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
★★★★★ 5
Comfortable and good fit.
Size: Large, Color: Black
Nice and comfortable Under Armour socks. Great buy!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026
★★★★★ 5
Socks
Size: Medium, Color: Beige/Cream/Green
These socks are great. Love them. Very warm too.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026