wiring check

ok, I am back again. I bought a new headlight switch and in the park position and the knob most of the way to the left i have my 12 volts at the fuse but still no instrument lights. Now when I turn the knob all the way to the right I lose my voltage at the fuse. My next question is does that ipv module (or whatever it is called) on the back of the instrument panel have anything to do with the lights.