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  1. #1

    Default Trailer Wiring Diagrams Pinouts








    Jamie

    2007 Ford E250(Work van) (Ya, Ya, shut up!)
    1996 GMC Sierra SLE 1500 5.7L/4L60E

  2. #2

    Default

    excellent graphics Cableguy! I can't think of much to add to that, except for maybe easy tap-in points for the turn signal lights. I'll get to that later though.
    Christopher

    1991 Chevy Suburban 1/2 ton 2WD w/ chevy SBC 350-3/4 ton drivetrain upgrade w/4.10 gears 200K miles
    2005 Saturn ION-2 Stock 265K miles
    1982 Bronco, 1993 Bronco (sold), 1971 M35A2 Deuce and a Half



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  3. #3

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    Trailer Wiring Diagrams

    4 Way Systems

    Flat molded connectors allow basic hookup for three lighting functions; right turn signal, left turn signal, stoplight / marker and a ground.

    4 way tow vehicle side.
    4 way trailer side.



    Jamie

    2007 Ford E250(Work van) (Ya, Ya, shut up!)
    1996 GMC Sierra SLE 1500 5.7L/4L60E

  4. #4

    Default

    5 Way Systems

    Same as 4 way system listed above but adds a extra red or black auxiliary power wire.
    5 way tow vehicle side.
    5 way trailer side.



    Jamie

    2007 Ford E250(Work van) (Ya, Ya, shut up!)
    1996 GMC Sierra SLE 1500 5.7L/4L60E

  5. #5

    Default

    6 Way Systems

    Round 1 1/4" diameter metal connector allows 1 or 2 additional wiring and lighting functions such as back up lights and electric brakes.

    6 way tow vehicle side.
    6 way trailer side.



    Jamie

    2007 Ford E250(Work van) (Ya, Ya, shut up!)
    1996 GMC Sierra SLE 1500 5.7L/4L60E

  6. #6

    Default

    7 Way Systems

    Round 2" diameter connector allows additional pin for auxiliary power.

    7 way RV flat blade tow vehicle side.
    7 way RV flat blade trailer side.



    Jamie

    2007 Ford E250(Work van) (Ya, Ya, shut up!)
    1996 GMC Sierra SLE 1500 5.7L/4L60E

  7. #7

    Question Brake control wiring

    2006 2500HD. My truck has what appears to be factory brake control wiring. I am installing a Tekonsha brake control. I have been told not to follow color to to color (red to red etc) . Is this correct?

  8. #8
    Jr. Mechanic SilveradoBrett's Avatar
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    Oct 2008
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    Default

    Cableguy these images are amazing. I have a question on the trailer wiring diagram for the flat four pin diagram. Maybe you can clarify, I don't have the best vision but I am looking at the part where you have to have three red marker lights on the back of the trailer if it is greater than "x" inches wide. What is that value? It looks like 60" or 5 ft but I can;t tell for sure. What state is that the law in? I am building a trailer for use in colorado and I am wondering if I need those. Its not a big deal, so maybe I should put them on there anyway just to be safe. Thanks for the help!
    1996 Chevy K1500 Silverado Z71
    -248000 miles
    -The legendary 350 small block V8 (5.7L)
    -Sound System with a 10'' kicker L5 sub and 1300W amp in a sealed box



  9. #9
    Jr. Mechanic SilveradoBrett's Avatar
    Join Date
    Oct 2008
    Location
    Fort Lupton, CO
    Posts
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    Default

    I forgot to ask one more thing, I figured since it looks like you know alot about trailers you might be able to help me. The trailer I am making is 6 ft wide and 8 ft long. I am thinking about putting 4 totzl marker lights on it, with addition to the turn signal/brake lights. So If I add the three more markers on the rear that makes for a total of 7 markers and 2 main turn and brake lights. Would this total amount of lights cause a problem with the power output. Basically what I am asking is that will all of the lights be dim since there is so many of them running on a single power supply? I am planning on using the cheap lights from walmart that have conventional automotive grade lightbulbs. Would it be better to use the more expensive led kind since they will require less power. Or would I be better off running two power sources one for the drivers side of the trailer and one for the passanger side of the trailer in order to provide enough power for all of the lights. Thanks for your help!
    1996 Chevy K1500 Silverado Z71
    -248000 miles
    -The legendary 350 small block V8 (5.7L)
    -Sound System with a 10'' kicker L5 sub and 1300W amp in a sealed box



  10. #10

    Default

    I got my trailer 1/2 re-wired, but I think I'm going to do it again with a better plan.

    Steve
    10 Chevy Traverse LT AWD
    02 Chevy Trailblazer LS (110K+ miles - loaded except for 4WD - WRECKED!)
    99 Chevy Cavalier LS (105K+ miles - commuter car)
    78 Chevy Suburban Silverado (454, 3/4 ton)
    62 GMC 3/4 ton Pickup (350 police interceptor)

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