Vent Fan Wiring

[Ag'71]

Hi, I'm a newbie here with a '71 Overlander. While cleaning my ceiling vent fan, I didn't take note of the wiring of the switch. Does anyone know how to wire the switch. There is a brown and red wire from the trailer and three poles on the switch. What goes where?
Thanks.

[HowieE]

If you have a volt meter one of the wires should have 12 volts on it and the other should go directly to the fan.

The switch may be marked. Com, NO, NC. If you see these markings put the hot wire on the Com and the other wire on NO.

The markings indicate Com common NO normally open, and NC normally closed.

[Ag'71]

Thanks! I'll check it out.