My jeep will not start...i have no power on guages or a/c or radio, wipers etc...checked the battery and it was 100% fully charged. What could it be? It jsut seems like its totally dead.

what jeep? what year,? 1946 willis jeep? no , its a stick but .....
this is park lock out feature failing
if the battery is not charged, nothing much works.
12.6vdc, rested, no running, is correct. ,less is bad or discharged.
below 11v many things give up the ghost.

wow, no mention at all of all the other things.
car starts. and engine runs, ?
head lights work.?
etc.
checked fuses yet>?

park lock out if bad.
is fully covered in the FSM
or alldata.co

charge the battery fully, first.
then test car.

just because the radio etc works does'nt mean that the battery has enough power to turn the engine over ,so try a jump start then get the battery checked to make sure its holding charge. if thats ok get the alternator charge rate checked, as if on the low side the battery will not retain enough power for all the vehicle's components.keep me posted

have your alternator tested, and check all your fuses

Charge the battery fully, clean the battery terminals and then try to start.

Sounds like either the battery is too dead or the battery cable connections are dirty. A very low battery will still power most accessories, e.g.: radio, blower motor, wipers, horn etc. because they are not drawing much amperage, nothing over 20 amps or so. However, the starter motor draws around 200 amps, and the clicking solenoid occurs from a lack of available battery power. Check the battery to see that it's fully charged. If the battery is charged and electrically sound the most likely problem is cable connections or a bad cable. Hope this helps get you on the right track.

If your battery light is coming on then going off this is an indication that your alternator or your voltage regulator is on the way out. I would have both of them checked. Have your alternator load and output tested. You can usually get this done free at any auto parts store. Your alternator may be charging just enough to keep up with your vehicle, but may not be putting out optimal power.

I would idoe your car and turn everything on ac to high, lights on highbeam, winhshield wipers, radio etc. If the battery light comes on under all of this load then your alternator is bad, I am betting that it will. If you are running radio amplifier and such like that it could be requiring more energy than your alternator is rated for and you would need an alternator that puts out more power.

Check your alternator and charging system

sounds more like a really bad battry hav it checked proffesionally

sounds like a fuse or starter relay.if your battery is fully charged.check for power at the starter when you turn the switch. you should have a starter control relay in your fuse box/relay center.

As far as the guage issue it is most likely a problem with the body control module, have a trouble code test run on the BCM to determine the issue, the stalling is caused by the loss of the idle strategy learning when the battery went dead, the best thing to do is the following procedure I use to clear this issue.

Here is the most common cause of surges and stalls (or very low idle) near or at idle, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.