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CURT Brake Controller Wiring Harness Trailer Brake Control Harness - Brake Control Adapter Harness - PN - 51421

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  • Part #: 51421
  • It takes a lot of power to stop a moving trailer, especially when that trailer is hauling livestock, construction materials, industrial equipment or other heavy-duty cargo. Play it safe when you tow and give your trailer brakes the control they need with a CURT trailer brake controller and brake controller harness. This brake controller harness comes with an OEM plug to connect to the vehicle and has pigtails to splice into a brake controller. It features color-coded wires to coordinate with the appropriate electrical functions and comes with two feet of wire for convenient installation. This splice-in brake controller harness can easily be installed using CURT snap locks and is designed to be compatible with certain years of the Buick Enclave, GMC Acadia, Chevy Traverse and Saturn Outlook. For a complete listing of vehicle compatibility, see the application info.
  • CURT 51421 Quick Plug Splice-in Trailer Brake Controller Wiring Harness, Select Buick Enclave, GMC Acadia, Chevrolet Traverse, Saturn Outlook
  • Class ID: 0
    Finish: N/A
    Product Weight: 0.000
    Title: Splice-In Brake Controller Harness, Select Enclave, Acadia, Traverse (Packaged)
    Warranty: One-Year Limited Warranty
  • Download installation instructions (PDF)
Ships between 09/29/2022 - 10/05/2022
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Product Info
  • Quick Plug design for simple installation
  • Install in seconds with no hard-wiring necessary (most vehicles)
  • Includes OEM connector, 2 ft of 12 gauge wire, and a protective sleeve
  • Covered by a 1-year warranty

Easily install your brake controller with a CURT Brake Controller Wiring Harness. Featuring the easy-to-install quick plug design, these Brake Controllers install in seconds with no hard-wiring necessary (most vehicles). Spend your time out on the road to your next adventure, not trying to wire up trailer controls. CURT Brake Controller Wiring Harnesses come with an OEM connector, 2ft. of 12-gauge wire and a protective sleeve to prevent wire damage. Backed by CURT’s 1-year warranty.

  • ATTN: State of California Consumers
    warning symbolWARNING:This product can expose you to chemicals including Di(2-ethylhexyl) phthalate, which is known to the State of California to cause cancer, and Di-n-butyl phthalate, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to
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