Do these mirrors mount at the factory attachment points?

Yes — they use OEM mounting locations. No drilling or bracket fabrication required; bolt directly to existing factory holes.

What wiring is needed for the heating and power functions?

Both the power adjustment motor and heating element tie into your vehicle's electrical harness. Have a qualified installer run the power leads from your fuse block and ground points; refer to your factory service manual for voltage and circuit specifications.

Are the LED turn signals plug-and-play, or do I need a load equalizer?

LED signals draw less current than OEM incandescent bulbs. Most modern Ford trucks handle the load without a resistor, but verify with your vehicle's electrical manual to avoid warning lights or hyperflashing. A load equalizer is cheap insurance if needed.