does anyone know where the "brakes" switch is-(that activates the dash warning light)-I think mine is defective or needs adjustment-thanks

 

there's no such thing.

if your brake light is on, your brake pads probably needs replacement.

 

Check your brake fluid level in the reservoir.....

 

^low brake fluid level is caused by overly worn pads. the pistons needs to push more to have the pads touch rotors, so it seems like there is not enough brake fluid. however if the pads get replaced, the brake fluid levels will go back up to normal again.