• The 7-Way Trailer Plug is around 2″ diameter connector that allows an additional pin for an auxiliary 12-volt power or backup lights. It is usually used for towing a heavy-duty landscaping trailer, car trailer, equipment trailer, horse trailer, dump trailer, travel trailer, construction trailer, and larger trailers.


  • Standard 7 Pin Blade Type Trailer Connector

    Pin # Function Min. Wire Size 4 12v auxiliary charging circuit 12 AWG 5 Left hand turn signal, left hand brake light 16 AWG 6 Right hand turn signal, right hand brake light 16 AWG 7 Backup lights 16 AWG
    Also, does a 7 pin trailer plug charge battery? You can put a maintenance charge on your trailer battery with the 12 volt accessory circuit of the 7-way. The 1:00 position of your 7-way carries this circuit. You would just need to run a length of 10 gauge wire like part # 10-1-1 (sold by the foot), from this pin to the positive terminal of the battery.

    Then, how do you wire a 7 pin trailer connector?

    Attach all of the wires to 7-wire plug. Tighten the screw at the left-center terminal. Slide the white wire between the lower-right plate and terminal, then tighten it. Attach the blue wire to the lower-left terminal and the green wire to the left-center terminal. Attach the black wire to the upper-left terminal.

    What is the center pin on a trailer plug?

    The center pin on the 7 way connector can be used for many different purposes, although it is typically used to carry the signal from the reverse lights on the vehicle to the trailer.

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