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
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Third brake light 7-Way Interface plug-in T Harness - 300100
Fits most trucks with 7-way trailer plugs #300100 Will not fit 2020+ new body style Chevy / GMC trucks with the Smart Tow and Advanced trailering system and 2015-2024 Ford F150, 2016-2024 F-250 and 2016-2023 Toyota Trucks (Tacoma and Tundra)
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