The overdrive wiring harness could chafe and cause an electrical short circuit.
Electrical system
MG MGB Electrical problems by year
0 complaints filed with NHTSA about the MG MGB'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