where is the gas tank located at on a 2004 Dodge stratus 4 door coupe

Battery replaced yet? Mine overheated and while I was pulling over, the battery light came on, it's never done that. I pulled over and shut off the car and popped the cap off the radiator knowing it would blowout fluid a lil bit, but cool it off quicker. I replaced the fluid, but the battery light was on. I drove about 2 blocks and it went from completely cool to extremely hot and it died, lights dimmed, ect. I couldn't even get the windows up, but after a min some charge returned and I got the windows up. Replaced battery and it started right up, but battery light was still on and it could be alternator, but I think it's the fuses shorted when I get them wet because the ac/ heat doesn't work now, stereo, interior lights, and so on. So, if you know a solution to my problems or possibilities I haven't thought of would be much appreciated. 2004 Dodge Stratus V6 Coupe.

Catalytic converter stopped up.