MICTUNING 4-Way Flat Trailer Wiring Harness Extension Kit
This is a 25ft male & 6ft female 4-flat marine trailer wiring harness to quickly extend your truck-to-trailer wire.
The Wishbone style harness allows ...

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MICTUNING 4-Way Flat Trailer Wiring Harness Extension Kit
This is a 25ft male & 6ft female 4-flat marine trailer wiring harness to quickly extend your truck-to-trailer wire.
The Wishbone style harness allows you to run wires separately down each side of the trailer to tail lights without needing a jumper wire.
This trailer wire harness kit is completely sealed for a long corrosion-resistant installation, offer long-lasting use and a reliable connection.

Effortless Trailer Wiring
These 4-pin trailer wiring plugs come ready to splice into your existing vehicle and trailer wiring.
The heavy-duty 18-gauge wires are color-coded for your convenience to know each wire¡¯s function, makes installation safe and straight-forward.
4-way 4-pin plug flat trailer wiring harness safely extend towing lights without consequently having a dimmer light, there is no need for splicing wires.



  • 25' MALE & 6' FEMALE SIDE - Our 4-way trailer wiring harness includes 25 foot male & 6 foot female, and you can install the trailer wire so quickly and easily through the 4-way connectors
  • Reliable Connection - 4-way flat plug connectors come ready to splice into your existing vehicle and trailer wiring, supply power for tail lights, turn and brake lights, as well as a ground connection
  • Wishbone Style Wiring Setup - Wishbone design makes it easier to wire to the taillights; The running lights are split into two wires on the trailer side for ease of wiring up the left and right sides without needing a jumper wire
  • 18AWG Color Coded Wires - SAE J1128 RATED, Meets SAE standards. The 4 flat trailer wire is color-coded to clearly identify each wire's function, easily splice into your trailer's wiring system, no need for splicing wires
  • Universal - Compatible With TRAILERS UNDER & OVER 80" WIDE. Suitable for all types of trailers including marine boat trailer, horse trailer, motorcycle trailer, ATV trailer, and other cargo utility trailer hitches

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