I purchased this unit when I owned my 14 MKZ a few months ago. I never installed it and now have a 17 and decided to use another option.
I will include the 2 fuse tap adapters I bought to go with this because the wire ends need to be changed to the fuse size in the MKZ.
Should be a simple install for model years 13 through 16. Although it can work in the 17's another member who had it mentioned it was bit of a pain on the 17's.
$50 OBO shipped from NC.
PM if interested.