I think your asking if the ceiling lights have a switch at the light? If they do and there is a wall switch, then they are all daisy chained.
There will be one run of 12V wires, and if you want to power the vent without having any lights on you’ll have to tap into the power BEFORE the wall switch or turn off the lights at each light if it has a switch and tap into the power wires near the fan.
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2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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