Hi,
By chance, are the front parking lights and turn signals working? I'm asking because it could be a faulty ground.
Also, under the dash at the top of the brake pedal is the brake light switch. Make sure it isn't out of adjustment or stuck.
I attached the wiring schematics below for the exterior lighting for your review. These are everything but the headlamps. Also, here is a link you may find helpful.
https://www.2carpros.com/articles/how-to-check-wiring
Let me know what you find or if you have other questions.
Take care,
Joe
See pics below. Note: The pics below came from one page. I had to cut it in half to make it readable for you. I did overlap them so you can follow from one to the next.
Images (Click to make bigger)
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Friday, June 17th, 2022 AT 9:35 PM