CURT 8' Dinghy Towing Adapter & Socket (7-Way RV Blade to 4-Way Round Vehicle) #57285

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Ideal for dinghy towing, this CURT electrical adapter is designed to adapt a 7-way RV blade vehicle socket to fit a 4-way round plug on a dinghy vehicle. A splice-in 4-way round socket is also included.

Quick Facts:

  • Adapts 7-way RV blade vehicle socket to fit 4-way round plug
  • Ideal for connecting motorhome to dinghy vehicle for flat towing
  • Includes 4-way round socket for front of dinghy vehicle
  • UV-resistant coiled cable extends up to 8' without scraping the ground
  • 4-way output connects tail lights, brake lights and turn signals
  • Includes harness and extra socket
  • CURT part number: 57285

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 7-way RV blade vehicle socket to fit a 4-way round plug on a dinghy-towed vehicle. It is particularly intended for use in flat towing and dinghy towing to connect the dinghy vehicle to the motorhome. It also comes with a 4-way round socket that can be spliced into the flat-towed vehicle at the front. All CURT wiring and electrical products come with a one-year limited warranty to give you the assurance you need to tow with confidence.


  • VERSATILE DESIGN. This dinghy tow wiring adapter makes it easy to connect a motorhome socket and dinghy vehicle plug, adapting the 7-way RV blade socket connector into a standard 4-way round
  • USEFUL EXTENSION. This trailer hitch wiring adapter comes with an 8-foot coiled harness to provide plenty of extra length to accommodate a variety of flat towing setups. The coiled cable helps keep the wiring harness from scraping on the ground
  • EASY GRIP. Plugging in your wiring and lights is easy with the ergonomic design of this RV wiring adapter. It features tabs on the sides for a better grip when plugging into the vehicle or unplugging
  • STANDARD FIT. This 7-pin to 4-pin trailer adapter wiring comes ready to plug into your motorhome and vehicle wiring. It connects the taillights, brake lights and turn signals
  • DURABLE CONSTRUCTION. For long-lasting use and a reliable connection, the housings of this dinghy towing harness adapter kit are made from durable black plastic and die-cast metal

Warning: Cancer and reproductive harm.
More Information
SKU 2021017460
Brand Curt™
Sprayer Included No
Country of Origin TWN
Leg Kit Included No
Cargo Trim Kit Included No
Cargo Mounts Included No
Side Wing Plate Included No
Warranty Term One-Year Limited Warranty
Unit of Measure EA
Item Length 15
Item Width 5
Item Height 3
Item Weight 1.375
UPC 612314050093
Manufacturer Reference Number 57285

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