I wouldn't have put Hawaii on my lift of places that needed heated mirrors
I have them on mine, they come in handy a few times a year. Most options are installed on every vehicle anymore, regardless of whether or not you order it. So all the wiring etc should be in place, just have to swap over the hardware. Many options are actually totally installed, just not hooked up unless you pay for them. Much like the Wrangler gas tanks that are 5gallons less than those that pay for the larger tank. All done with the exact same tank, but a little bitty tube that keeps you from fill it all the way.