Do these need to be wired to my factory harness, or can I just plug them in?

These are designed for plug-and-play installation—no additional relay modules or wiring harness modifications required. Connect them to your factory headlight connectors and you're done.

Will the switchback amber turn signal work automatically, or do I need to install a module?

The switchback functionality is built into the LED elements themselves. Once installed and powered, the amber turn signal activates through your factory turn signal circuit—no external module needed.

What about fitment—do these bolt directly to the OEM headlight mounting points?

These are designed to use factory mounting locations. Test-fit before final installation to confirm fitment with your specific vehicle configuration.