66 wont start need help. Grrrrrrr

[lwb66]

Guys i'm in dire need here. I got a 66 chevy truck that wont start. It was running fine one minute, I killed it walked in the shop to grab a drink came back and it wouldn't start. No Power to key, no headlights, radio comes on but blast high frequency static.. I have a small old school fan that's getting power to it. So what on earth would cause no power to the ignition and no headlights. All my fuses under the dash are good (well not blown anyway). Are the lights tied into the ignition key switch? and I have a bad key switch? Sorry for all the questions but I'm at a lose here.

1966 chevy
sbc 283
standard trans