Let's fix my non-op headlights

[jayoldschool]

Ok, after two years of having my truck in operating condition, it's time to fix the headlights. They don't work.

Diagnostics:
- parking lights work
- no high or low beams
- no blown fuses
- all other wiring works

Today, bought a new dimmer. The old one came apart when I tried to unplug the harness. Took this as a good sign. Had to really work the connector to remove it from the old terminals (that were totally rusted). Grabbed the multimeter, no voltage on any of the terminals. The terminals on the wiring side aren't rusty like on the dimmer. Wait, should I have measured to ground? I didn't do the jumper test yet because the new dimmer didn't work. Does it need to be screwed to the floor to function?

I know I'm missing something simple. Thanks in advance for any advice.

On a more positive note, we fired the engine in my buddy's 63 C20 for the first time since swapping it in. Had to buy a voltage reg and horn relay to wire it up.