http://www.nicoclub.com/FSM/I30/1999/br.pdf
On page 10 of 81 look at the stop light switch by the brake pedal
Push the switch in and out and have an assistant tell you if
the brakes are going on and off
When the switch button is fully extended your brake lights come
on. The distance between the pedal and the length of the button
extension will determine whether your lights come on
If your rubber plug came out i went to Harbon Freight and bought
a magnet to fill in the hole
You have to put your head where your feet normally go to see all of this!