Changed bulbs
Pull the bulb back out and look in the plug. They get corroded and the tabs will spread apart and/ or break off. Bend them back if they are there, replace it , if not.. If it looks good, you need to use an ohm meter and check continuity of the tabs to the wire. They usually break close to the plugs.
Testimonial: "I don't have a ohm meter but the tail lights and the brake lights are the same bulb, the tail lights work until you press the brakes then just the left and the center brake lights work. I"m not a mechanic but I know my way around a car and this has got me stumped. I have checked the wiring and bulb socket and all that appears fine."
Yeah, it is the same bulb. But if you look at the bulb, it has two wires in it. One is for the tail lights, one is for the brake. Two different hot wires. the brake doesn't become hot until you push the brake pedal. But they both have the same ground wire. when the ground goes bad, usually the brake light/ it has to find a ground. usually threw the tail light. This cause a lot of resistance in the wires. It kills the tail light. So check the grounds For that side of the lights. You know your way around the car, time to learn about electricity. Meters are cheap. Get one, they come with basic instructions.
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