Question about 2003 Chevrolet Silverado 2500HD

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Looking for color code (diagram) - 7 wire trailer harness/wiring

Want to install 7 point trailer connector in box of truck for towing fifth wheel trailer as opposed to plugging into 7 point bumper connector. would like to know correct color code for each wire before proceeding with installation. any other advice or tips welcomed. Thanks!

Mike

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  • lesgaudet May 06, 2009

    Thanks. Already bought a new plug. Will double-check the color code you provided with my Keystone fifth-wheel trailer, just to make sure.

  • rascob_43
    rascob_43 Mar 03, 2013

    help

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  • Chevrolet Master
  • 3,433 Answers

If you haven't purchased the plugs yet. The wire color codes should be included in the package.

  • If you are using used plugs ck the back of the plugs for color or function of wire
  • Wht - ground
  • red - stop
  • blue - accessory/aux
  • brown - tail
  • black - Marker
  • grn - left turn
  • yellow - right turn

Posted on May 06, 2009

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