The first thing you need to do is make sure that your connector works properly. We will be using the pollack 4 foot pigtail wiring.
Circuit Tester Kit Trailer Light Wiring Running Lights
4 way trailer plug wiring diagram gmc. Trailer electrical connectors come in a variety of shapes and sizes. The basic purpose remains the same whether your truck and trailer is using a 4 way 5 way 6 way or 7 way connector. Today in our 2016 gmc sierra 2500 hd we will be installing the pollack replacement 7 pole rv stack trailer socket part number pk11893. By law trailer lighting must be connected into the tow vehicles wiring system to provide trailer running lights turn signals and brake lights. Check with a test light or vom. A 4 way plug connects your trailer and tow vehicle and provides the required running lights turn signals ground and brake lights.
If your vehicle is not equipped with a working trailer wiring harness there are a number of different solutions to provide the perfect fit for your specific vehicle. 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. If you own a newer truck with a factory or dealer installed towing package it is likely that you have an rv or 7 way wiring plug. Lets see what types of connectors the trailer light wiring industry uses today. 6 way systems round plug. If you try to tow anyone elses little boat or small trailer you will notice that the plug is totally different a simple little flat plastic plug with 1 male and 3 female pins.
Most of us arent electricians but that doesnt mean wiring a trailer or replacing corroded wiring is beyond us. Well walk you through the wiring process its easier than you think. This covers 7 pin heavy duty and 4 pin light duty wiring. If it is not no amount of wiring will get the lights to work. Round 1 14 diameter metal connector allows 1 or 2 additional wiring and lighting functions such as back up lights auxiliary 12v power or electric brakes. Make sure that all cables are electrically conductive.
This is how to install trailer plug wiring on a 2000 era gm suv and trucks like escalade avalanche yukon tahoe and suburban. One way to check for faulty wires is to use a circuit tester. Installing your 4 pin trailer wiring system is easy if you follow the correct procedure. The black sometimes red 12v and blue electric brakes wire may need to be reversed to suit the trailer. Complete with a color coded trailer wiring diagram for each plug type this guide walks through various trailer wiring installation solution including custom wiring splice in wiring and replacement wiring.
Gallery of 4 Way Trailer Plug Wiring Diagram Gmc
