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sue 8/5/2010
2002 Ford F-350 Super Duty XLT 8 Cyl 7.3L - Engine
signals and brake kights on trailer dont work all running lights do, the problem lies somehere in the truck
all trailer wiring etc ok, hook up another truck andfthey work
2 Answers
  • alphawolf123
    alphawolf123 1/11/2013
    check the circut couming out of the trailer connection at the truck you may have a short there .or at the trailer relay under the hood
  • judymboroki
    judymboroki 2/20/2013
    if when you hook up the trailer to another truck and the lights work, then the problem is most probably on the truck. check the wiring connections you have made from the truck to the trailer. check whether the connections are light.

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