Daimler Trucks North America (DTNA) is recalling certain model year 2013-2014 Thomas Built Buses brand Saf-T-Liner EFX school buses manufactured from March 29, 2012, through November 14, 2012 and equipped with 100% Daytime Running Lights (DRL) option code C3676-24-000. The DRL circuit breaker may trip during continuous operation of the headlights in high beam mode. This would result in a loss of power to the headlights, marker lights, tail lights, and dash lighting.