check your ign. fuse. sounds like the starter cylinoid, but first make sure the battery is not dead(good head lights)check connections for corrosion and snug fittings. the cylinoid is located on the starter.the red wire from the battery goes to it.the problem could also be in the switch.to find where the problem is you will need to test power to the s termanal at the cylinoid with the switch in the "start position" if you have voltage when trying to start will indicate a bad cylinoid no voltage at start is a bad switch or wireing to the starter.
Bad battery, starting motor or both.
If the battery is bad, you may only hear clicks. It could be the starter, but I would check the charge on the battery first.
Weak battery or poor connection - battery to starter. Possible bad starter.
If it does nothing you have a loose or corroded battery connection. If it clicks and will not start then the starter may be frozen and or defective. I would also try jump starting it to make sure the battery is good even though it shows full charge.
This sounds like your battery.
Check for bad connections or fusable link
AnswerDim lights and lots of clicks is an indication of too low a charge on the battery. When jump-starting, allow the battery to be attached to the jumper cables for about 5 minutes before trying to crank the engine. If that fails, check for loose battery cables at the battery, ground, or starter. If all connections are good, then the battery is too far gone and must be replaced. Note: You need to find out why the battery discharged - did you leave the lights on? is the alternator bad?.
Dead battery or a bad connection to the battery.
If you are talking about a car engine and battery then it is not the battery that is clicking. It is in all probability the solenoid.
That means the solenoid IS working, but power is too low to turn the starter. Check and if necessary clean or tighten the battery terminals. If still the same, charge your battery on slow for at least 12 hours, or get another battery.