ELECTRIC BRAKE WIRING INSIDE THE BRAKES MAY BE LOOSE AND THEREFORE COULD BE EASILY DAMAGED BY THE ROTATING HUBS.
ON CERTAIN VEHICLES, A PROTECTIVE RUBBER GROMMET MAY HAVE BEEN OMITTED FROM AN OPENING IN THE METAL BATTERY COMPARTMENT. THESE VEHICLES HAVE THE 12-VOLT ELECTRICAL WIRES PASSING THROUGH A SHARP EDGED OPENING IN THE METAL BATTERY COMPARTMENT THAT, WITHOUT WARNING COULD CUT THROUGH THE WIRE INSULATION CAUSING AN ELECTRICAL SHORT CIRCUIT.