looks like elsawin is missing the 'bog std spec' mk3 radiator fan diagrams, they're all for the VR6 as you can see they include the electric coolant pump

need to work back from your wiring i think, the trouble is some ABF looms dont have the rad fan after-run fitted, i might have a couple radiator fan control unit looms kicking about somewhere though i did do a massive wiring loom clearout the other day
oh, the switch kicks in at 100degrees. can test the system by earthing the wire
