Yes, if the bulb is of the right voltage, as in a torch (flashlight).
Use another vehicle to jump start it, or replace the battery, or charge the dead battery with a charger.
No
Check your charge in your battery. Just because all things turn on does not mean your battery has enough power to start the engine. Charge your battery or get a jump start.
If by "fast click" you mean a series of rapid clicks, that is an indication of either a flat (low) battery or loose battery cable(s).
dead battery or a broken wire between the battery and the starter
It can start with just one battery.
The problem is not the starter. The battery is either not holding or not receiving enough charge. Problem could be (1) loose alternator beltl (2) loose/corroded battery cable(s); (3) dead cell(s) in the battery; (4) bad alternator.
Sounds like the battery went dead or you have loose/dirty battery connections.
Weak battery and no gas can both cause a no start.Weak battery and no gas can both cause a no start.
No, a 1983 Honda Xl250 does not need a battery to start.
Because it is suppose to start if the battery is hooked up.
charge the battery, change the battery, use the back up start either a pull start or kick start.