Help! Low beams and Raido stopped working

1995 Chevy Duelly.. 3500 drove it home last night.. Raido and headlights worked fine. This morning, the radio stopped, no Low Beams. High Beams do work. I can't find a bad fuse. And I don't understand why they would tie in the lowbeam head lights with the radio.

Help!! Any ideas?

Thanks !

On checking fuses check for 12 volts to and threw them.

.......... usually when u have funny things happening with electrical it has to do with shorting between two wires... find i wiring diagram.... they might share the same ground... best thing to do is to understand the system and how it works... and just cause u got 12v dont mean u have the current to run a stereo or head lights...... and did they both stop at the same time or wat?? find a wiring diagram and check or continuity.... resistance... cause corrosion on a ground wire could do that