BLUE BIRD HAS NOTIFIED NHTSA ABOUT A DEFECT IN CERTAIN MODEL YEAR 2010 ALL AMERICAN SCHOOL BUSES MANUFACTURED FROM MAY 13, 2009 THROUGH FEBRUARY 26, 2010. THE WIRING HARNESS FOR THE REAR TAG LIGHT MAY BE OF INSUFFICIENT LENGTH RESULTING IN THE HARNESS BEING ROUTED IMPROPERLY AND EXPOSING THE CONNECTOR TO THE ENVIRONMENT WHICH COULD CAUSE THE CONNECTOR TO CORRODE. CORROSION COULD CAUSE A DIRECT SHORT IN THE TAG LIGHT CIRCUIT. A SHORT IN THE TAG LIGHT WIRING CIRCUIT, WHICH INCLUDES THE HEADLIGHT LOW BEAM CIRCUIT, COULD CAUSE SUDDEN LOSS OF HEADLIGHT LOW BEAMS.