when i had my s-10 a few years back, i had the same style knob for the headlights as my ranger...i found a toggle switch that fit the hole perfectly, and after a little trial and error we got the wires all right...wasnt as impressive as we thought but it killed some time
04 Ranger Tremor
Kenwood Excelon x-693
RE Audio SE 12 w/ US Amps Xterminator 1600
10000k HID Headlight Conversion
More to come....