No you don't have too. You can turn the headlights off with the auto-headlight mod. Just when you have switch set to on it automatically turns them on at night and turns them off when you turn the truck off.
Does anyone have the wiring diagram for an OHC with Auto Dim mirror?
I have the entire OHC wiring harness down to the A pillar as well as the wiring for the mirror (the one with just a slide at the bottom)
I believe I have a diagram without the mirror, but not one for an OHC with the mirror.
I'd like to try out the mirror, but I don't want to use the auto headlight function.