REAR ANTI LOCK brake light stays on after replacing back- up light switch. Why?

What is your question?

High miles (270,000) but well maintained 4wd, 5 speed 4-Runner. Replaced back-up light switch which caused a short to gauges, windows, blower motor, cruise control etc., making a trip home from Montana challenging. Fixed that problem and now have new one. Is it the wheel speed sensor? Brake system works well. Fluid levels are up. Fuses intact. Can I cover the light with a piece of black tape and be happy. What's wrong?