This is the Leer kit for those with a 2019 5th Gen:Leer provided a pigtail that sandwiched in between trailer 7 way plug and the wiring harness from truck (harness uncoupled from back of 7 way plug). This feeds the brake light and also gives 12 volts to any aux lighting that u would want to install

Third brake light 7-Way Interface plug-in T Harness - 300100
Upgrade your truck and camper lighting system with the Third Brake Light 7-Way Interface Plug-in T Harness – part number 300100. Specifically designed for most trucks with 7-way trailer plugs, this harness ensures seamless integration for your camper or truck cap's third brake light and...

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