testing 69 camaro headlight switch

[bad69 396]

no dash lights or console lights, i did a ohm multimeter test of switch for dimming the dash,pulled to park position and turned knob to left for brightness and number read a 4,turn to the right for dimming and to turn off it read -1, well i think that is the opposite readings for both,bright to left should be -1 and right to dim should be 4 am i correct on this? thanks