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6 pin trailer wiring

Discussion in 'Truck & Equipment Repair' started by earl964, Mar 4, 2008.

  1. earl964

    earl964 Member
    Messages: 53

    Does anyone know the wiring diagram for a 6 pin trailer connection. The connection is on a 99 Ford F 350
  2. basher

    basher PlowSite Fanatic
    from 19707
    Messages: 8,990

    If you're talking about a cole hurst style plug the functions are all listed on the back. Molded right into the inner body.
  3. tawilson

    tawilson Senior Member
    Messages: 218


    KINNCO Senior Member
    Messages: 256

    it's on the flip cap
  5. earl964

    earl964 Member
    Messages: 53

    backed into a pole while plowing flip cap is gone that is why I need to fix it
    thanks tawilson I will try that website
  6. basher

    basher PlowSite Fanatic
    from 19707
    Messages: 8,990

    Is this a seven pin plug ??? Factory black plastic??

    If so

    White is ground
    red is left turn
    right is brown,
    taillights are green,
    12V is black,
    electric brakes are blue
    and the center is reverse lights.
  7. earl964

    earl964 Member
    Messages: 53

    no it is the 6 pin and it is a metal case
  8. basher

    basher PlowSite Fanatic
    from 19707
    Messages: 8,990

    Then the wire placement will be molded on the back by where each of the wires go.
  9. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Sounds like your not seeing the center pin as a number...which would make it a standard issue 7 pin connector.

    This diagram is convenient as it shows the colors as well as the placement from both sides of the plug. Colors may vary by manufacture..

    Last edited: Mar 5, 2008
  10. basher

    basher PlowSite Fanatic
    from 19707
    Messages: 8,990

    Not factory if it's metal
  11. mmaddox

    mmaddox Member
    Messages: 57

    ID's are on the plug/socket, Tail/Marker is brown, Right Turn is green, Left Turn is yellow, GRound is white (and the large pin/socket), Stop is red, Blue is Aux. And they are marked by the capital letters. Be aware that not always are the factory, or after market wire the standard colors. The Stop terminal is hooked to a brake controller, if used. The Aux is most often used for back-up lights, sometimes a power lead. Every once in while, the red and blue will be switched, but red is correct for the brakes. This is a carryover from when this plug was used for semi trailers, which have separate stop and turn lamps. A good reference source is a lighting supply book from Truck-Lite, Grote, NAPA, Carquest, and such. If it is a seven pole, flat pole (as opposed to the six pole, round pole), markings and color are the same, except the B/U and power are separate, as is the 7 pole, round pole currently on semi's.
  12. basher

    basher PlowSite Fanatic
    from 19707
    Messages: 8,990

    On the RIVA or US car what ever you call it the brown termanial is RT the Green is TM

    The brown WIRE is TM and the Green WIRE is RT

    Blue is brakes. Red is LT

    Don't confuse the seven pin Cole Hurst (round Pins) and seven pin RIVA (US Car, Bargman) with the flat connectors