CURT 4-Way Flat to 7-Way RV Trailer Wiring Connector
  • Thumbnail  CURT 4-Way Flat to 7-Way RV Trailer Wiring Connector

CURT 4-Way Flat to 7-Way RV Trailer Wiring Connector

Part # 57186
SKU # 840053



Part #57186
SKU #840053
Package Contents4-way to 7-way adapter with brake control wiring and instructions
Trailer Side Connector7 Way Blade Round
Connector StylePlug-In
MaterialCopper, Molded Plastic
Vehicle Side Connector4 Way Flat
Night IlluminationNo


There are several different types of connectors used to supply power from a tow vehicle's electrical system to a trailer's wiring system. Some trailers only need the bare essentials -- running lights, brake lights and turn signals -- while others require a connection for reverse lights, electric brakes and auxiliary power. With connectors ranging from simple to complex, it may be the case that the connection between your vehicle and your trailer is not a perfect match. For example, your truck may be equipped with a 6-way round socket, but your trailer may have a 4-way flat plug. For this very common problem, CURT offers a quick and simple solution in the form of an electrical adapter. An adapter is an electrical device that allows a connection to be made between a mismatched trailer plug and vehicle socket. It easily plugs in your vehicle's electrical socket and usually requires no additional wiring. CURT offers an array of adapters to accommodate most types of plugs and sockets, including 4-way flat, 4-way round, 5-way flat, 6-way round, 7-way RV blades and more. This electrical adapter is designed to adapt a 4-way flat vehicle socket to fit a 7-way RV blade trailer plug. It also includes wiring and electrical components to splice in and route a brake control connection from the cab of the vehicle.

  • checkmarkAdapts a 4-way flat vehicle socket to fit 7-way RV blade trailer plugs
  • checkmarkIncludes wiring and components to splice in a brake control connection
  • checkmark7-way connects tail, brake, reverse, turn signals, brakes and auxiliary power
  • checkmarkSimple plug-and-play design for easy installation (some manual wiring required)