2003 Mercury Sable Radio

Electrical problem
2003 Mercury Sable Front Wheel Drive Automatic 76,000 miles

I have a 2003 Mercury Sable LS, one day while in a rush for school and accidently left my lights on, I got a jump for my car and the radio hasn't came back on since. I've checked my car for the fuse box, but in the owners guide all it told me was that I have two fuse boxes, but didn't tell me where the radio fuse was. Tried putting a new radio in but since my climate controls are digital they won't put a radio in it. Any help on what happend or what I can do?