Will this fan come with a thermostat switch or relay wiring?

The fan ships as the unit only. You'll need to source your own switch and relay setup to wire it into your cooling system—most builders use an aftermarket electric fan controller or thermostat switch rated for your fan's amperage draw.

Can I run this fan straight off a battery with a switch?

Yes, as long as the battery and wiring gauge support the amp draw. Double-check your fan's electrical specs and run appropriately sized wire with an inline fuse—never rely on a basic toggle switch alone.

Does the red finish need any prep before installation?

The fan arrives ready to mount. If you're concerned about the finish holding up in a high-heat bay, you can inspect it on arrival—no priming or painting needed out of the box.