1/12/2024 0 Comments Electric trailer breakaway wiring![]() Wiring gets a little more complicated when you tow larger or more sophisticated trailers. Improper wiring can lead to blown fuses, and in extreme cases, overheating of wires which can result in a fire in your vehicle. So, if you are a do-it-yourself wire person, please ask us for advice before doing your own wiring. In many cases, we must bypass the computer system when we wire a vehicle for towing so that the towing wiring doesn't confuse the vehicle's computer into thinking something is wrong with it's lighting system.Īgain, special converter units and wiring harnesses must be installed to alleviate this problem. We are also seeing more sophisticated computer systems being installed on vehicles nowadays. Required for some vehicles to avoid vehicle light circuit damage. Eyers Trailer Hitch Center sells and installs tail light converters and trailer light power modules to accomplish this.Īll trailer light power is routed through the tow vehicle's light circuits.Īll trailer light power is routed directly from the tow vehicle's battery via a separate power line. Tail light converters are required to connect a vehicle with a 5-wire system to a trailer with a 4-wire system. Most import vehicles and newer domestic vehicles have both a red brake signal and a separate amber turn signal (2 bulbs per side). Most trailers are wired to use a single red light for both the brake and turn signals (1 bulb per side). The law says that any trailer that protrudes 4 or more feet behind your vehicle or visually blocks your taillights must be equipped with it's own taillights, and your vehicle must have a connection to the trailer's taillights. Your qualified hitch installer will wire up your taillights, signals, and brake light functions into a special plug or connector in order to access the trailer's light systems.īasically, when you flip on your turn signal or push your brake pedal, the lights on the trailer must also signal your intentions to the driver behind you. The trailer lighting system must not be directly spliced into your tow vehicle lighting system. (Print the video notes for future reference.Special light and wiring systems need to be installed on your tow vehicle before you can tow any trailer. (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. 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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