quickmedic1 Posted October 26, 2004 Report Share Posted October 26, 2004 On the ss trucks that have a factory trailer hitch the truck has a harness that your trailer plugs into located on the hitch. This harness runs the length of the left frame rail to the fuse/relay box under the hood. On my non trailer hitch ss I have a harness that is tucked up next to the spare tire. By adding an adapter to this you have a trailer hook up. Does anyone know what the difference is between the two harnesses? Quote Link to comment Share on other sites More sharing options...
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