Before you tow any trailer, you should make sure it has functional trailer lights. Because installation works related to electricity scary many vehicle owners away, they prefer the experts at trailer shops to have the job done for them instead of trying to figure out how things work. While the basic configuration is a 4-way flat connector that features one female and three male ends, you may come across connectors with up to seven pins for additional functions that require wiring, including electrically actuated brakes, power source for a winch, etc. This is the most common scenario.
How to Install a Trailer Brake Control
How to Hook Up a Trailer: 12 Steps (with Pictures) - wikiHow
Chevrolet Silverados were factory-fitted with an in-dash "plug-and-play" harness for the fitting of aftermarket brake control before model-year Later model years still have the wires installed, but because they do not end in a terminal multi-block, some hardwiring is required. All feature a factory-fitted round seven-pin hitch mounted to the rear of the truck adjacent to the tow package, so wiring a trailer brake control to either installation is a relatively straightforward project. Install the brake control in the cab according to the instructions delivered with the unit. Locate the "plug-and-play" harness under the dash, if fitted. It is usually found taped to the steering column close beneath the dials. Route the harness from the brake control to the location of the truck's harness and press the two terminal multi-blocks together until the small sprung teeth in the sides of one component clip into receivers molded onto the other.
How to Wire Up Electric Trailer Brakes
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You should be able to find what you are looking for there. However, if you don't have the manuals, or that information isn't provided, then this information may help you. The color of the wires is what they will usually be, but occassionally the color scheme will be different. If you are lucky and have the factory tow package already installed you may already have this wire running from under the dash to the rear of the vehicle.