1994 2500 4x4 automatic.

Sometimes when I park the truck, it has the brake lights on.
Pumping the brake pedal makes the brake lights turn off.
So the brake light switch is getting stuck, and I need to fix or replace it.
I searched the forum but didn't find anything.
Where is the brake light switch?

 

Center of dash, right inline with brake pedal on the mounting bracket. Last one I did was like 13 bucks at the parts store.

 

Check the switch behind the brake pedal. Its made of plastic.