Try to start the truck yesterday completely dead. Not sure why. No problem pull out a charger jump it and everything looks good. let it warm up/charge for 10 mins hop in drive away....drives fine. Today same thing. I jump start it check cables, grounds, idle etc. looks normal. I let it run about 20 mins then jump in and the minute i touch the brake pedal it immediately cuts off completely dead. Jump it a few more times and each time i test parking lights, windows, locks etc. any use of anything immediately shuts the car off. Also the battery gauge is pretty far over to the right while it runs and stays there. It is a 2 year old interstate 65 month batt, on the original charging system with 85k on it. Is this an alternator, starter, battery, issue? I dont have a multimeter right now so any suggestions as to the cause?