No power lights etc but ignition turns over?

Has the wiring been hacked up? Or is it completely stock? And when you say it turns over you mean it cranks on the starter USING THE KEY right?

Are you saying the headlights don't work? If they don't, you MAY have a failed main splice under the dash. This is a big welded splice in the black ammeter wire a few inches from the ammeter.

you need to detail EXACTLY what does and does not have power

And THINK........was it over charging? (overvoltage) You may have burned out a bunch of lamps................