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CURT 57185  
$17.70
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4-Way Flat to 7-way RV blade trailer plugs; Die-Cast
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 features strong diecast metal construction and comes with a mounting bracket for a secure installation. This adapter does require some 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.

Features & Benefits:
  • Adapts a 4-way flat vehicle socket to fit 7-way RV blade trailer plugs
  • 7-way connects tail, brake, reverse, turn signals, brakes and auxiliary power
  • Constructed from high-strength steel
  • Spring-loaded dust cover keeps connector clean when not in use
  • Slit loom keeps wires contained and well protected
  • Steel bracket securely mounts wiring to the vehicle or trailer hitch
Note:
  • Some manual wiring required
Additional Resources

Installation Instructions
Wiring Plug Diagram

Attention California Customers - WARNING: 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 www.P65Warnings.ca.gov


Warranty Information:
12 Months