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7-Way and 4-Way Trailer Wiring Harness for 2021 Ford Bronco with Halogen Headlights  

Updated 10/30/2025 | Published 02/14/2025

Question:

Is there a 4/7 pin tow wiring kit for Bronco trims with Halogen taillights?

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Expert Reply:

Hey Kel, best solution to have both a 7-way and a 4-way on your 2021 Ford Bronco with non-LED lights would be to start with the 4-way part # TK33VR and then use the 7-way adapter part # 37185 which has a 4-way connector on it as well. There isn't a 7-way kit for your vehicle configuration due to the lights you have. Does your trailer have brakes?

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Jameson C
Jameson C. profile picture

Jameson C.

10/30/2025

Hey Kel, did the combo of the 4-way harness and 7-way adapter work out on your Bronco with halogen lights? Your results could really help others trying to wire a similar setup.

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