Hot answers tagged exhaust-fan
You should extend the wiring from the light, not the switch. There should be two wires on your light fixture, one grounded (neutral), and one ungrounded (hot) conductor that's controlled by the switch. Extend those wires to the fan, along with a grounding conductor. That will allow the switch to control both the light, and the fan simultaneously.
Only top voted, non community-wiki answers of a minimum length are eligible