My 195rb bath vent had a manual on/off light about 18 inches away. I fished the 12 volt hot wire to the light and spliced onto it.
Installed a Hengs Vortex fan that is a 3 speed and reverse and we love it.
If you have a push button on the light switch and not a wall switch there should be way to get some power from that circuit.
2017 SLX 195RB
2021 Jeep Grand Cherokee Summit L 5.7L V8
Andersen WDH hitch, Renogy 100 AH Lithium &
200 Watts solar panels from Renogy
Prev. '14 Jeep Grand Cherokee Overland, gas 3.6 V6