Is it the alternator or battery?

Dovie Salais

By John Paul  |  Special to The Journal Q: My car will only start with a jump start. Before jump starting the car, the lights are dim. After the jump start, the lights are very bright. Is this an alternator issue? A: It certainly presents itself as an alternator issue. Depending on […]

Alternator (automotive) – Wikipedia

Dovie Salais

Alternator (silver) mounted on a V8 engine Alternators are used in modern automobiles to charge the battery and to power the electrical system when its engine is running. Until the 1960s, automobiles used DC dynamo generators with commutators. With the availability of affordable silicon diode rectifiers, alternators were used instead. […]

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