Stairwell Light Switch Adjustment For School Bus, Limousine, Shuttle! A&M Systems! Safety Inspection 

This is how to adjust the striker for the limit switch to activate and deactivate the lighting in the stairwell of a bus, shuttle, limousine, etc. with this kind of rod, motor, & gear system. This may not work for setups that are not by this company. As always, be careful. If you're not sure, take your vehicle to a professional.