The tail light on driver side stays on when the car was turned off

This will help resolve this issue > Get a helper and check the brake lights to see if 'ALL' are working properly, without key in switch .. Post test results for more information on how to 'fix' this problem.

Brake light switch

Stopper pad for the brake light switch is missing. Plus you have a tail light harness problem and ck the bulbs too. Trust me. That car is in my blood.