MGB GT Electrical System

MGB GT Electrical System

mgb electrical system

The MGB initially had an extremely simple electrical system. Dash mounted toggle switches controlled the lights, ventilation fan, and wipers with only the direction indicators being mounted on a stalk on the steering column.

The ignition switch was also mounted on the dash. Like the MGA, the MGB utilized two 6-volt batteries wired in series to give a 12 volt positive earth configuration.

The batteries were placed under a scuttle panel behind the seats making access a bit of a challenge but the location gave excellent weight distribution and thus improved handling.

The charging system used a Lucas dynamo. Later MGB’s had considerable changes to the electrical system including the use of a single twelve volt battery, a change from positive to negative earth, safety type toggle switches, an alternator in place of the dynamo, additional warning lights and buzzers, and having most common functions moved to steering column stalks.

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