yar i think every thing related t lighteniung should be converted to LED,, they can cover all its needs,, and they onsume very little power,, they can replace the headlght with led . a typical equivalent led wont consume more then 4 Watt ,, as compared to 25 / 35 watt,,
also led can be available in the light range,, they can travel upto 3 KM ..
this wil alow to turn on or off lights without thee need for starting engine,plus the led wil work flawlessly for at least a decade,,