'72 Valiant has no power

Still no luck so far. I replaced the voltage regulator and that didn't fix it. I had the battery checked out and it seems fine. I then used a test lamp on both sides of the fusible link and it seems good too.

I have a wiring diagram saved somewhere. I've never used a VOM meter before. Any idea if the cause would most likely be in the engine compartment or behind the dash?

I've had the Valiant since '97 but I'm a real amateur with fixing wiring issues. Any help walking me thru this is greatly appreciated!