There are several different types of connectors used to supply power from a tow vehicles electrical system to a trailers 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 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 vehicles electrical socket and usually requires no additional wiring CURT offers an array of adapters to accommodate most types of plugs and sockets including 4way flat 4way round 5way flat 6way round 7way RV blades and more This electrical adapter is designed to adapt a 4way flat vehicle socket to fit a USCAR connection providing a standard USCAR plug to accept a 7way RV blade or other socket It also allows you to use the Echo brake controller on your vehicle even if youre only equipped with a 4way flat connection The Echo must be plugged into a 7way RV blade and this adapter kit equips your vehicle with a standard USCAR plug to accept a 7way socket and be compatible with the Echo brake controller Some manual wiring is required 7way not included