The voltage reg is sticking and will run down the battery.
You have a flat battery.
No, not unless the ignition is turned on.
1) Check the battery cable connections. They should be clean & tight. 2) Check the connection at the starter. They should be clean & tight. A loose ground cable on the battery. Check ground cable on the starter.
the diodes in the alternator have gone
I may be having the same problem. I replaced the battery. The interior lights, siren, horn, radio all work, but the car will not turn-over when the ignition is turned. I am really interested in how to unlock the vehicle.
Defective ignition switch, or bad starter.
Headlights run off the battery not the ignition...
your ignition switch is hanging up in the crank position.
battery is shot?
failed relay
A person will have no power to the ignition when the key is turned over when the battery is dead or the ignition switch is defective. Each component must be tested to rule them out as a problem.
check the battery and connections/cables