4 Pin Flat Trailer Wiring. If you're towing just for the day and don't ever plan to tow again, you can pick up some adapters that replace the taillight This means you'll need a connector with at least four contacts. First, knowing the diagram of wires for trailer will be useful during troubleshooting.
Put a flat connector tester into plug on truck and it only shows running light working and not turn signals. Repair or replace your trailer wiring or connectors with replacement parts at Camping World. Hooked trailer to wife's Ranger and lights OK.
The left and right turn signal lights should each have a different color.
Trailer Wiring Diagrams showing you the typical wiring for most single axle trailer and tandem axle trailers.
First, knowing the diagram of wires for trailer will be useful during troubleshooting. Find all of your trailer lighting needs at Menards from adapters to complete trailer wiring kits. But wiring a trailer may not be easy.