I haven't been able to find in the forum any details of installing heated mirrors. I plan on buying the Honda mirrors that have the heat feature in them for around $35 each. However, I would like to use the rear window defrost switch, but I am not sure if the wiring is large enough to handle the additional load. Honestly I would rather have heated mirrors vs a rear defrost. Also, I don't think I have ever seen a truck with rear defrost besides my truck, but may come in handy this winter. Has anyone installed the OEM heated mirrors? Can I use the existing wiring from the rear defrost switch or will I need some type of relay to separate the load?