Will these plug into my factory wiring harness?

These mount at factory fog light locations with a dedicated wiring harness. You'll need to run power and ground from your battery or fuse block — pulling existing OEM fog connectors isn't guaranteed to work here since aftermarket harnesses differ from factory looms.

Do I need to prime or paint the black bezels?

The bezel comes finished. No additional prep needed before installation. If you want a different color or need to blend with custom paint work, that's a separate modification beyond the stock assembly.

What if these don't fit after I open them?

Test-fit before final wiring. Once you've connected power and committed to the installation, return eligibility depends on condition — contact ModSupply directly with photos if there's a fitment issue before you cut into your harness.