4-Wire Trailer Connector Wiring The Key to Safe and Reliable Towing

This trailer wiring guide comes complete with a color coded trailer wiring diagram for each plug type, including a 7 pin trailer wiring diagram. 1973 - 1979 F-100 & Larger F-Series Trucks - Trailer Wiring Harness (4 Wire) - I was working on my truck when the four wire harness just ... ... 4 pin trailer connector? Save Share. Reply Quote · Like. Sort by ... And, even with the wiring diagram I was not going to custom wire anything. Green=rt Brown=Running Yellow= left White Ground ,Just hook the wires up to a new 4 wire matching the colors .Pretty simple fix . Like. 4-way Trailer Plug: Brown = Marker. Yellow = Left Turn. Green = Right Turn. White = Ground (left loose). 7-way Trailer Connector: TRAILER WIRE COLOR. PLUG COLOR. Brown is parking lights, just like the trailer connector. Orange/light blue is right brake/turn, light green/orange is left brake/turn. Ground ... I would suggest that you google this and get a diagram of each version then with a helper test your plug on the van to see how it is wired. If ... Just need to know what the wires in the factory plugs are so I can make sure they go to the correct leads in the 7 wire plug. Thanks, Ian. 95 ... TYPICAL WIRING DIAGRAM FOR 6-WAY ROUND. CONNECTORS. TM. GD. LT. S. RT. TRUCK ... 4-WAY PLUG. TRAILER END. YELLOW. BROWN. YELLOW. WHITE ........ 3. 7. 5. BLUE. Learn how to repair a trailer wiring harness that was damaged when borrowed by someone who did not connect the wiring to their vehicle.