After a search I'm bringing this thread back up.
I got a great deal back in August on a 2015 CR-Z base model. One thing I really miss from my last Honda (An Insight EX model) is the heated exterior mirrors. So I'm considering upgrading the unheated mirrors on my base CR-Z to EX-style heated mirrors. I have yet to pull the mirrors off and look at the wiring harness, but when I looked up the door harness and mirror part numbers for a 2015 base model vs. EX, I get the identical part numbers. This leads me to believe there may in fact be "vestigal" wiring already in place.
Has anybody done this upgrade to a base model or at least looked into it?
2015 CR-Z Base 6MT