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Curt Manufacturing 51457 brake control harness coiled on surface

Curt Manufacturing

Curt Manufacturing 51457 Brake Control Harness

SKU CH-576Q-QRVEJ

A brake control harness for trailer or plow towing setups, supplied new with Proposition 65 warnings

  • Product typeTrailer, Plow & Towing Equipment
  • Connects brake controller to trailer wiring using model 51457
  • Supports towing and plow equipment electrical needs
  • New condition ensures reliable out-of-box performance
  • California Proposition 65 warning for cancer risk included
  • California Proposition 65 warning for reproductive harm included

Curt Manufacturing 51457 Brake Control Harness

This Curt Manufacturing harness connects a vehicle's electrical system to a trailer brake controller. It is designed for drivers who tow trailers or operate plows and need a reliable wiring link. The part carries the manufacturer part number 51457 and is supplied new. It falls under the automotive electrical and industrial wire category.

Sustained towing load behaviour

Under continuous towing the harness maintains a steady connection between the controller and the trailer brakes. The wiring is built to handle the electrical demand of brake actuation over long distances. No overheating or signal degradation is reported for the intended application. The product includes a California Proposition 65 warning for chemicals known to cause cancer and reproductive harm.

Replaces damaged or missing factory wiring

This harness upgrades a frayed, corroded or absent original equipment brake control lead. The jump is worth it when the existing plug is broken or when a vehicle was not pre-wired for a controller. Buyers who need a different connector style or a longer lead length will not be served by this specific part number.

How it compares

Measured against everything we stock in Wire, Cable & Wiring Supplies, at today’s prices. Recalculated every night.

Price $10.99
Cheaper than about 73% of the 1,610 comparable items (median $25.99).

Specifications

Product
Brand nameCURT
Product typeTrailer, Plow & Towing Equipment

Questions about this item

Does the Curt 51457 draw enough power to cause heat buildup during long towing trips?

The harness is a passive wiring assembly with no active electronics, so it does not generate heat or draw measurable power on its own.

What vehicle-side connector must already be present for the Curt 51457 to plug in?

It requires a factory or aftermarket brake controller port compatible with the specific vehicle application.

Will the Curt 51457 work alongside an older brake controller the buyer already owns?

Yes, the harness simply routes the controller’s output to the trailer connector without altering the signal.

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