Does this mount using factory bolt holes?

Yes — attaches at factory mounting points with no drilling or modification required. Use your vehicle's service manual for torque specifications.

Will the towing arm interfere with the truck bed or tonneau cover?

The arm is designed to fold flush when not extended. Test-fit to confirm clearance with any tonneau cover or bed cover you have installed.

Does the power motor come with wiring harness?

Mirror assembly is included — verify your vehicle's existing wiring is compatible before installation, or have an installer confirm connections with a service manual.