To install a 7-Way harness on your 2023 Ford Bronco you will need two separate wiring harnesses because they don't make just one that'll do the job.
The first harness you'll need is the Curt T-Connector Vehicle Wiring Harness item # C87BR. This custom-fit T-connector plugs into your Bronco's wiring harness, which is located behind the incandescent tail lights. This will provide you with a 4-flat connector.
The second harness you will need is the Universal Installation Kit for Trailer... view full answer...