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extra plugs

  1. 6.7 Exterior Discussion (2011-2016)
    Looking for some help on trailer wiring. Took delivery of brand new 2012 F350 and the dealership can't seem to answer my questions. Next to the spare tire is what I expect to be auxiliary trailer harness factory plug with capped seals. One plug is six wire, blue seals. The other is two wire with...