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To quickly extend your current truck-to-trailer wires, use the SUZCO trailer wire extension, 25 foot, 4-way 4-pin hitch trailer wiring harness extender, which complying with SAE J1128 Standards. This is a 4-way standard flat light connector with double trailer ends (4-way flat car and trailer end). LONG EXTENDER with COLOR-CODED The heavy-duty and contractor grade 20-gauge wires are color-coded for your convenience, and with this 20-foot long extender, there is no need for splicing wires. You can safely extend towing lights without consequently having a dimmer light. EFFORTLESS TRAILER WIRING Use the SUZCO trailer wire extension, 25 foot, 4-way 4-pin plug flat 20 gauge hitch light trailer wiring harness extender to extend current truck to trailer wires. VARIOUS APPLICATIONS 4-way standard flat light connector with trailer ends; For all types of trailers including marine boat trailer, horse trailer, motorcycle trailer, ATV trailer, and other cargo utility trailer hitches (tow/haul vehicle must have a 4-way plug). NO SPLICING No need to splice your new wires, simply extend them with this extender. ---------------------------------------------------------------------------------------------------------------------------------------- SPECS ◆4-Way 25-foot trailer harness connects with a 3-foot ground wire to your tow vehicle to control trailer light functions. ◆Conforms to SAE J1128 specification. ◆Color coded 20 gauge bonded wires. ◆Wishbone-style harness comes with 2 taillight wires split for simple wiring. ◆Allows you to run wires separately down each side of the trailer to tail lights without needing a jumper wire. ◆Color-coded wires help with installation. ◆Standard flat trailer light connector. ◆Do not splice new wires just extend them. ◆Lifetime warranty.