Do these tail lights work with my stock wiring harness?

These mount to factory points, so wiring harness compatibility depends on whether you're keeping stock bulbs or going with LEDs. Check your connector type against the included units before purchase.

Will I need new bulbs for these?

Bulbs are not included with this set. Verify your current bulb type and confirm it seats properly in the new housings — some clear lens designs use the same bulb, others require a swap.

Do these come with gaskets or seals?

Hardware for mounting or weatherproofing is not confirmed as included. Inspect the housings and factory mounting points before installation to determine if you need additional gaskets or silicone sealant.