All You Need to Know About 4 Way Trailer Plug Wiring Diagram GMC

Having a trailer can be a great way to get around and take bigger items with you. But there is always a small matter of hooking the trailer up to your car and that means dealing with trailer wiring. Wiring a trailer system to your GMC is not as hard as it may seem, but it could be confusing if you are new to it, so it pays to know a bit about the wiring involved. There are a few different types of connectors and it is important to use the correct one. If you have a 4-way trailer plug, then you need a wiring diagram to ensure you hook it all up correctly.

Working with electricity and wiring can be dangerous, so it is important to hire a professional for most jobs. However, if you're feeling confident you can tackle this job yourself…by all means, go for it! All of the information that you need to wire a 4-way trailer plug is available on the web and in manual form, so you just need to make sure that you are careful and thorough with your work to avoid any dangerous consequences.

What Is A 4 Way Trailer Plug?

A 4-way trailer plug is four-pin connector that is used to connect a trailer to a vehicle that supports the technically advanced trailer battery charging system. This system is designed to allow the trailer to get power from the vehicle’s electrical system while the vehicle is being driven, thus allowing the trailer to have a fully functioning electrical system while it is attached to the vehicle. As the vehicles electrical system becomes strained when additional electrical items are attached, the trailer battery charger system makes sure the trailer doesn’t place too much strain on the vehicle’s system.

How The System Works

The 4-way trailer plug will typically use two dedicated pins for power delivery and two dedicated pins for ground sites. The more advanced versions of the plug may also provide additional pins for dedicated connections to a trailer’s brake system. The most basic function of the 4-way trailer plug is to supply and receive power to the vehicle’s running and stopping lights, although in more advanced systems the 4-way plugs are also used for charging the trailer battery and delivering power to other accessories in the trailer.

Choosing The Right Type Of Plug

When choosing a 4-way trailer plug, you need to look at the type of vehicle that you have and the type of trailer that you have or will get. Different types of trailers will require different types of connectors that are compatible with specific electrical system designs. Many trailers use a 7-way plug and you will need an adapter to bridge the gap between the 7 and the 4-way trailer plug system. Once you have found the right plug, you will need to check the wiring diagram to ensure that you have the correct wires connected to the correct pins and that everything is in the correct order.

DIY or Professional?

If you feel confident in your abilities to hook up the 4-way trailer plug safely, then it pays to consider trying it yourself. However, working with electricity can be dangerous and it pays to be aware of the risks associated with it. Therefore, it is also important to understand the limits of your abilities and to call a professional if you are unsure. Remember, a little extra money spent on a professional may save you the headache of dealing with a damaged electrical system or worse.

At the end of the day, 4 way trailer plug wiring is not something that should be taken lightly. With a bit of knowledge and a carefully followed wiring diagram, you can be sure that your GMC is ready to go no matter what trailers you choose to take on the road.

Trailer Wiring Diagram Diagrams For Trailers