Do these connect to my factory wiring harness?

They mount at factory fog light locations. Confirm your truck has OEM fog light wiring before ordering—if you're retrofitting into a truck that didn't come with fogs, you'll need to run a dedicated harness and switch.

What about electrical draw compared to stock halogen?

LED units pull significantly less amperage than halogen, which can prevent relay strain and reduce alternator load—useful if you're running other aftermarket electrical gear.

Are these sealed against water and debris?

Yes, the projector housing is sealed to prevent moisture inside the lens. Chrome trim is protected, but inspect the gasket during install to confirm a clean seal with your truck's bumper trim.