A short circuit could occur due to chafing or wire disconnection in the box.
Electrical system
Mack RWS Electrical problems by year
0 complaints filed with NHTSA about the Mack RWS's electrical system. Dead batteries, warning lights, wiring, alternators, infotainment and electronic module failures.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked daily. Complaints are owners' own reports and are not verified. How we use the data