Troubleshooting 4-Way Connector Install On 2022 Ford Bronco LED Tail Lights Brake Lights Not Working

Question

Question:

Installed a 4 flat wiring harness with the converter on a 2022 Bronco Outerbanks with LED lights . Hooked up to a trailer and have left turn, right turn, running lights but no brake lights on trailer. really Odd. Normally if you have turn lights and running lights, brake lights work. Brake lights on trailer work with other vehicles. We wire vehicles regularly but this has us puzzled. Thanks

asked by: Jim G

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Expert Reply:

It sounds like there is either an issue with the powered converter or the brake wire which attaches to your 2022 Ford Bronco. You can use a Test Light # PTW2993 to test for power on the red wire of either the Tekonsha # TK99VR or Curt # C42WR when you press the brakes on your Bronco. If you have power on the red wire going into the converter and nothing coming out for the brake lights then you know the converter is defective. If you find there is no power on the red wire connecting to the tail lights you will want to verify the pin didn't push out of the connector or break/bend inside the connectors.

expert reply by: Bud M

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Answer 1

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 2

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 3

Hey Jonathon thank you so much for all of that additional information! To haul your bikes behind your class C Sprinter motorhome, while flat towing your Mini, I recommend the Hollywood Racks RV Rider Bike Rack item #HLY64FR and the Roadmaster Dual…

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Answer 4

Hey Mark! Thanks for your continued business. We appreciate it. :) We get questions like this a lot as it's hard to tell sometimes if you have LED or halogen / incandescent tail lights. If you look at the taillight housing and see bulbs through…

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Answer 5

Hello Steven, thanks for reaching out. Yes! The Air Lift LoadLifter 5000 Air Helper Springs #AL38FF will indeed fit your 2022 Ford Bronco with the Sasquatch package. All the hardware and brackets will bolt on without modifications. I also recommend…

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Answer 6

Hey Scott! It looks like your 2025 Bronco Badlands SAS comes with LED lights so for trailer wiring you can use the Curt T-Connector Vehicle Wiring Harness #C42WR. This plugs into the connection points behind your tail lights and will provide you with…

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Answer 7

Hey there, I completely understand wanting to keep your new Bronco as clean and unmodified as possible while still getting a solid flat tow setup. For a 2025 Bronco with the capable bumper, the best confirmed base plate option is the Roadmaster…

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Answer 8

Hey Mike, if you can fit a larger 12 inch wheel and tire like the part #AM35351DX which is a ST145R12 on a 4 lug wheel this will be your best option as it will have a higher speed rating than what you have now and will also have a higher weight…

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Troubleshooting 4-Way Connector Install On 2022 Ford Bronco LED Tail Lights Brake Lights Not Working

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