Azhari, there is a connector right on the electromagnet coil. If you can't reach it around the pulley, removing fan, shroud, detensioning belt, and removing the pulley takes about 15 min.
Fastbenz, the freespin is normal. If it decided to clutch in while your fingers were on it, you would lose them - and ruin the fan. The switch turns on at 100C, if it works correctly.