While you're down there, check for brake fluid leakage out of Master Cylinder. Not uncommon for it to leak. Brake fluid swells the OEM plastic pivot bushings and pedal return gets to be like molasses.
Another quick check is to hook your foot under the brake pedal and pull back toward you. If that turns off the lights, you've got a sticky pedal.
Also give a quick check to your taillamp plastic housings. Lights that are stuck on have a way of melting the housing above the bulb. I've seen them melt a hole. Hopefully you're not that far gone.