4 pin trailer wiring diagram how to#
For instance, most four pin wiring diagrams will show how to connect the white wire of the trailer to the ground pin of the tow vehicle. Knowing the basics of four pin wiring diagrams can help anyone ensure their trailer is wired correctly. The diagram also provides clear instructions on how to attach the wires to the pins. It explains which wire goes to which pin, and it also offers additional information such as the type of trailer plug and socket, additional wiring components, and grounding requirements. A four pin wiring diagram trailer is a simple chart that shows how to connect the four wires on a trailer to the four pins of the tow vehicle. A four pin wiring diagram trailer is an essential document for anyone looking to tow a trailer safely. Many trailers, especially those used for camping trips and other recreational activities, require some sort of connection between the tow vehicle and the load. (Print the video notes for future reference.Trailer wiring is a crucial part of any trailer owner’s toolkit.
(Print this guide and save for future reference.) So if you step on the brakes and all the trailer lights go out, then you need to ground your trailer to your truck with the ground wire. If your brake lights work, or your marker lights work, but nothing works when you turn on both at the same time, your trailer is not grounded to the truck. You may think the rubber caps protect the plug, but they tend to hold the water in. That is the green stuff that forms when oxygen from the air or water comes in contact with copper. A thin coat of grease will help prevent copper oxide from building up. The ground wire should be large enough to handle the entire load do not depend on grounding through the ball. Make sure your ground wire, which is typically white, is securely attached to the frame on both the truck and trailer side. Keep in mind that it isn’t always as simple as matching the colors like you might be inclined to do. Having the wires backward will cause problems. When referencing the 7-Way RV Plug diagram, make sure you are looking at the plug the way the diagram is showing you.
4 pin trailer wiring diagram download#
Download the guide below, print it and keep it in your toolbox for future reference.
We are going to do our best to simplify that, mainly with a good, color coded diagram. If you’ve ever looked at a 7-Way RV Trailer Connector, you have probably stood there scratching your head in confusion. With all the abuse and day-to-day wear and tear, you may find yourself repairing or replacing one sooner or later. Here at AJ’s, we are all too familiar with the accidents people have with the plugs: forgetting to unplug and pulling away, dragging it on the ground. It is usually used for towing heavy-duty cargo trailers, aluminum trailers, dump trailers, utility / landscape trailers, equipment trailers, open car haulers and enclosed car haulers. The 7-Way Trailer Plug is around 2″ diameter connector that allows an additional pin for an auxiliary 12-volt power or backup lights. Trailers with electric brakes need them too. Most new vehicles equipped with a tow package have connectors.
It’s the dreaded 7-Way Trailer & RV plug that we all have come to know and love.
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