My 2004 chrysler pt cruiser non turbo 2.4 liter has been having battery issues. now it wont start, and the ignition will not turn over at all. the lights and radio work in the car, and ive tried jumping the car off with cables and another vehicle, and still will not turn over, any ideas?

Testing the starter electrical circuits is how to find the problem . Viewing wiring diagrams to see what all is involved in the starting of your vehicle ? Most vehicles have a starter relay that is energized by the PCM/ECM - engine computer . B+ voltage comes from the ignition switch going through the starter relay control side to the PCM - which will ground that circuit turning on the relay sending B+ voltage to the S terminal on the starter solenoid .
Do you know what a automotive relay is an how to test ? How to test for B+ voltage at the starter ? How to use a DVOM - digital volt ohm meter ? Free wiring diagrams here http://www.bbbind.com/free-tsb Enter your vehicle info. year , make , model and engine size. Under system click on engine ,then under subsystem click on charging system . Click the search button then the third blue link , this is the starter electrical circuit . This diagram doesn't show the park neutral safety switch input to the PCM . Speaking of the park neutral switch , put transmission in neutral an see if it starts then , could be the switch is bad .