You may have a electrical short in your ignition switch or in your fuse relay box,check to see if any water may have gotten into the fuse box relays.
Check your battery.
Check battery, charge it or change it. Dead battery.
if clicking but not starting dead battery if it starts it's one of the many relays that open and close during startup
Battery is dead or you have a bad solenoid. Connections at the solenoid and/or starter could be loose or corroded.
starter relay , up of the battery , open ignition on , place car on park and jump it.
Put Key in ignition and turn it a bit.
Dead battery, loose or corroded battery connection, or defective ignition switch. Can also be a defective neutral safety switch.
Probably a weak battery or the starter drive is stuck.
Did you try checking or replacing the battery? Usually clicking when trying to start means dirty battery terminals or a dead battery. That's the first thing to check, before ignition switches, ignition relays, and starters; auto parts stores will check it for free. If it's dirty or corroded terminals, clean them up and try starting again. If it's dead and old, just replace it. It it's a new battery and it's dead, check your charging system (alternator, fuses, belts, etc).
A blinking red light is the adapter's way of informing you of a low battery.
Likely the battery cables are corroded but the battery is fine. If the battery is good and your getting a clicking sound there likely that ...green corrosion... if you peel the rubber back off your terminals you will seee it. Don't waste money by not making sure the battery is dead first.
check the fuses some cars have them under the hood as well as in the car Check ignition coil or coils Check to see if battery is grounded ok Dead battery? Bad battery cable? Check and clean all battery cables.