any I've seen are tucked under the metal around the side of the roof, behind the rubber headliner retainer - and yes, if you get under the dash and poke around the bottom of the pillar you might find them, although you might find they've been broken off by someone trying to pull them out - if gone at the pillar you need to feed them up or down there, which can be a bear as the pillar is 3 pieces spot welded together, need to use a fish tape of some kind to drag the wires thru
Bill