on the circuit board connected to the ks relay there is two sides , one side only controls the add bonus light , undo the two screws holding the spring take it off ,then the washer then the double sided pivots , use some circuit board cleaner give the board a good clean, then with some sand paper giver the two pivots a clean, that pivot arm give it a little bend to make sure it is making contact with board then put it back together the same way you take it off, and check it with a dmm to make sure its making contact , make sure when you put the spring arm back on that its not to tight on or the pivot arm wont move freely around