99 intrepid wont start just clicks

the starter uses 10x more elect. power than the head lamps
or 100x more than dash lamps. it means little.
what matters most is jumper cable starts.
does it crank with jumper cables to a running, donor car,(aaa jump)
no bad starter
no, bad starter key line( immobliizer or such) ask how to test.
yes, cranks great, now.
that means the battery was dead,
i charge the battery and it now cranks, due to lights left on or
charge system failure, if battery goes to 13.3 to 15v running good
if on the charge system failed. (causing battery discharge)
if after charging a battery it will not crank car, its a bad battery (jumps ok)

Loose or Bad Battery Cables. Tighten all the ends, and inspect the cables closely end-to-end.

Turn the headlights on, and then try to start the car. If the lights dim wayyy down, it's the cables or connectors for sure, if it ain't the battery.

Use jumper cables from another car-put the positive jumper cable on the post on the starter where the battery cable connects, then the negative jumper cable to a ground on the frame of your car. Turn on the car you are jumping with and let it run about 10 minutes. It might charge up your battery in the trunk enough to open the trunk.

corroded battery terminals, clean them, and try jumper cables.
both way use same crappy terms.
what transmission A/T or M/T my guess, A/T
so wiggle the gear shift, try neutral starts. this is the PRNDL switch
wiggling it finds new fresh brass on the switch contacts,
wiggle as you crank the key.
if that fails
then hot wire the starter solenoid.
if that act causes cranking, then the starter and battery and cables are good. and means the KEY LINE is bad.
if no crank , hot wired, then that means the starter bad. (battery good , battery charged in all cases)

see hot wiring here.

http://www.fixkick.com/nocrank.html

in a nut shell
1: battery charged at 12.6vdc. rested.
2: chock wheels, all brakes set., in PARK (or M/T in neutral.)
3: gain access to the starter
4: unplug the key line (that is the tiny wire) on starter solenoid.
5: keys in pocket
6: jumper the solenoid tiny wire, to the big outboard lug on solenoid.
grrrrrrrrrrrrrrrrrrrrgggggggggggggggggggggrrrrrrrrrrrrrrrrrr
it wont start, keys are in pocket.
the starter is good, i save you 1/2 the diagnosis. in 1 simple step
put the wire back removed in #4
if its dead, the KEY line is dead. ask how to fix that. next. i f so be...

does the engine crank normally?? when you say it "attempts" to start?? how was the battery run dead??

First if the jumper cables were hooked up backwards you could have killed your battery, which was probably dead to begin with. Get a new one then try and start. If it doesnt look more into the ignition switch than the starter. Alternator has nothing to do with starting, it could be bad and not charging the battery but will not cause your car not to start.

change the battery

battery is dead again let it charge longer then try it.
clean your cables and then have the alt and battery checked if they are both good then something is staying on like mine my brake lights stayed on once and killed the battery
good luck

Yes, security system, try drivers & passengers doors & unlock with key.

If you have a multimeter, connect it to your battery, and select an appropriate DC voltage range. On my multimeter, I use the 20volt setting.

If your battery shows 12-13.8 volts, then it is not the issue. If your battery voltage is low, then you will probably need a new battery. A flat battery can also indicate that the alternator is not recharging your battery properly, but it could also just mean that your battery is old and needs replacing.

If your engine wont turn over, and if your battery is good, it could be a faulty starter motor.

Those jump start packs need to be charged often, or the battery inside them can stop working. It is possible that your jump starter pack is also broken.

Try jump starting the car from another vehicle, with jumper leads. If you know your battery is dead, you could also just replace it with another one.