Trailer Pin 4 Way Wiring Diagram. Wiring your four-pin trailer can be a challenge when you first do it, but it's a simple do-it-yourself task. Learn all about trailer wiring at HowStuffWorks.
It gets complicated when you have trailers with more cables, and in this case, you need an adapter to make the connections. Learn all about trailer wiring at HowStuffWorks. Some trailers come with different connectors for cars and some have different wiring styles.
Let's see what types of connectors the trailer light wiring industry uses today.
Referring to a wiring diagram for a trailer comes in handy during installation.
Download the transparent clipart and use it for free creative project. The white wire is your ground wire, which must be cut short and attached to the front of your trailer frame with a screw to power your lights. 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 bulbs in your vehicle and have pigtailed wires hanging from them.