Fixed my issue. I had 12V in the socket, but the light still didn't shine. Changed switch and now it works. I found the shifter in the middle of the car on the driver's side, attached to the back of the gearbox. (It's easier to find in the back of the car. Jack up the car. First remove the wire clamp. A 19mm (3/4") socket wrench or socket wrench will remove the switch. Make sure the Is in reverse but not Start it, turn the key to ACC position and then you can check the taillights.
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