Polarity indicating apparatus for a battery jumper cable assembly includes a first wire having a first end thereof secured in electrical connection directly to a negative battery terminal clamp and having a second end thereof disposed within a positive battery terminal clamp. A second wire has a first end thereof secured in electrical connection directly to a cable-less handle portion of the positive battery terminal clamp. A light source is positioned in close proximity to a free end of the cable-less handle portion of the positive battery terminal clamp and is secured in electrical connection directly to opposite ends of each of the first and second wires. The light source is operable to emit light only when the positive battery terminal clamp is connected to a positive terminal of a battery and when the negative battery terminal clamp is connected to a negative terminal of a battery.