Remove bulbs (test to prove they work) reinsert bulbs ,test brake light SWITCH, Need to get to see the action of the brake pedal see if THE PLUNGER IS NOT STICKING the switch will adjust by moving the lock nuts up/down therefore adjusting the throw of the plunger.IE HOW QUICK LIGHTS COME ON
Remove the 2 wires if insulated use a WIRE link to join together like this the lights WILL WORK proving switch SUSPECT, CHANGE!
wirecutterman
January 2008