Help... Late for Work- truck won't turn over...

[kxnomore]

Hey guys. My truck won't do anything to turn over. The lights and everything like that works just fine, but the engine won't even try to turn over. I'm thinking it's either a bad ignition switch, or a loose or broken wire down at the solenoid. There's a rat's nest under the dash and under the hood.

Does anyone know which wires I can jump at the ignition switch to see if that will kick it over? And if that doesn't do it, which wires do I jump down at the Solenoid? Is it the outer wire to the block, or the one nearest the block?

Thanks in advance.