How to Wire a 6 Pole Round Trailer End Plug | etrailer How to Wire a 6 Pole Round Trailer End Plug. Also, there are pictures to the right that show how the connector and receptacle wire by color and function. And I have included a link to a video showing installation of a 6-Way trailer connector. Pollack wires the PK11604 in the following manner: White - Ground Return Brown - Tail Lights Yellow - Left..[PDF] 6 Way Plug Wiring Diagr am - Country Trailer Sales 6 Way Plug Wiring Diagr am Standard Wiring* Post Purpose Wire Color. TM Park Lights Brown GD Ground Black (or White) S Trailer Brakes Blue LT Left Turn/Brake Light Yellow RT Right Turn/Brake Light Green A Accessory Red. The most common variances on this diagram will be the (blue/brake) & (red/Acc.) wires will be inverted. If there is no.