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Universal Part
UPC: 612314570041

LED Electrical Adapter (7-Way RV Blade Vehicle to 4 or 5-Way Flat Trailer) #57004

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  • Adapts a 7-way RV blade vehicle socket to fit 4-way or 5-way flat trailer plugs
  • Enables vehicles with a 7-way RV blade socket to recognize LED trailer lights
  • Built-in, integrated resistors for computers that don't recognize LED lights
  • 4-way flat output connects tail lights, brake lights and turn signals
  • 5-way flat adds connection for reverse lights
  • Simple plug-and-play design eliminates the need for cutting or splicing

Guides & Install Sheets

Product Videos


  • Hub WarehouseD25
  • MaterialBlank
  • Parcel AllowedYes
  • Part Type7-Way Electrical Adapter
  • ShippingFreight Only
  • Shipping Weight0.350
  • WarrantyOne-Year Limited Warranty

WARNING: Cancer and Reproductive Harm -

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 or 5-way flat plug on a trailer with LED lights. It features built-in resistors for vehicles with computers that don't recognize LED lights and enables them to be compatible with trailers that have them. It also has a simple plug-and-play design and requires no splicing. All CURT wiring and electrical products come with a one-year limited warranty to give you the assurance you need to tow with confidence.

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  1. 100%


    Great adapter, solid construction.

    This adapter works great when connecting a 7 pin hookup on your SUV to a 4 or 5 pin trailed with LED lights. This allows moderns vehicles to recognize the trailer with LED lights. Normally LED lights do no provide a strong enough Load to activate the trailer connection, with this adapter, my VW Atlas recognizes a trailer with LED lights. Provides power for Tail/Running lights, Left/Right Turn signal/stop lights.

    It does not provide +12 Volts for external battery nor brake control signal - but that is OK since 4 and 5 pin connectors cannot carry those signals anyway. Well made, works great, solid construction.

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