I have the trailer harness installed on 80. Any Idea where to get the part that plugs in here and goes to trailer I would like to get both the 4pin and the round 6 in circle plus ground in center one. It has a"T-harness" between the tail lights. Just missing the "tail" that plugs in to go to the trailer. The "down" leg of the "T" The Pict shows the plug in point.
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