![]() Take a look at some of our related articles below. The plug assembly must now be fitted together. Cable wires should be connected to the plug terminals. Plug in the cable after connecting the central wire. The easiest way to wire a trailer connector to a vehicle is do an internet search for plug and play trailer wire harness. To see the wires, remove the old plug.Įvery cable needs to be insulated. ![]() Purchase a premium 7-pin trailer plug first. ) use a test light to check the prongs where the fuse plugs into. You can test the trailer brakes directly by disconnecting the trailer and applying 12V power to the appropriate pins on the 7-way plug. controller while you test for the output signal on the 7-way. This is how a 7-pin trailer plug is fixed. If thats good, check for 12Volts at the VSS pin 1, also check for less. Since you have a Chevy factory integrated controller you can use a circuit tester like PTW2993 to test the brake circuit pin on your 7-way. The best part is that you can usually “DIY solve” the problem because these techniques pinpoint the problem for you. RELATED Trailer Brake Magnet Wiring (How-to Guide)Ĭonsult an expert if the previous continuity test and 7-pin trailer plug multimeter test are unsuccessful in resolving your issue. Cleaner for Electrical Contacts (Optional).Two individuals: one to operate the car and one to operate the multimeter.A multimeter with black/red probes - for testing voltage.The following things are required to test properly: Test the blinkers, brake lights, and reverse lights.Test each light to see whether any of its wirings is malfunctioning.Connect the multimeter probes to the bottom left and the top right slots in the 7-pin trailer plug.Understand the 7-pin trailer plug configuration.In general, testing a 7-pin trailer plug with a multimeter only takes a few minutes: ![]() But still, with proper guidance, you can test it easily at home to see whether there is an electrical break within the plug and even fix the 7-pin trailer plug instead of getting a new one. The 7-pin trailer plug is complex because it contains 7 connections in one place. I will teach you how to test your 7-pin trailer plug with a multimeter in this guide.Īs a professional handyman, I often test 7-pin trailer plugs with a digital multimeter without any trouble.
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