Will this plug directly into my truck's wiring harness?

Yes. This mirror connects to the factory mirror control module and power harness without adapters or rewiring. Plug it in and mount it at the factory rocker points.

Do I need to remove the old mirror before installation?

You'll need to disconnect the power connector and unbolt the old mirror from the door first. After that, reverse the process to mount this one—basic hand tools handle it.

Is there any preparation needed before I install it?

Test the heating and fold function before final mounting to confirm operation. The mirror arrives complete and ready to mount—no disassembly or prep required.