Do these mount at the factory bumper attachment points?

Yes. These are designed to use existing factory mounting locations on the FJ bumper — no drilling or custom brackets needed.

Will I need new wiring to get these operational?

You'll need to run power and ground from your battery or a relay to activate the DRL circuit. Exact routing depends on your electrical setup — most builders run this as a standalone circuit tied to the ignition or parking lights.

Can I return these if they don't fit as expected?

Check the supplier's return policy on ModSupply before purchase. Test-fit the assembly against your bumper before committing to final installation.