Did a radio install today. Must have drained the battery. Lights, radio, A/C, etc. all work but when I turn the key to start its just, "click, click, click". Of course its in the middle of a two car garage so that we had more room to work on the stereo, so there's no room to pull another car in next to it. Thought we'd push it out and get it next to another car, but shift lever is stuck in P. Please tell me I haven't killed this car by changing the radio!?!?!