Do these lights mount at the factory attachment points?

Yes. These mount at factory rocker points—no drilling or custom brackets needed. Standard hand tools and a socket set get them bolted in.

Will I need a wiring harness adapter or relay?

LED tail lights draw less current than stock incandescent bulbs, so most trucks wire in directly. If your truck has older wiring, a load resistor pack prevents fast-flash issues—test-fit first to confirm your setup.

What if the lights don't work after installation?

Start with polarity: confirm the positive and ground wires match your truck's harness. Check for a blown fuse or corroded connections in the main tail light harness. If the assembly itself is dead after confirming correct wiring, contact support for a swap-out.