How to install a dash cam on a 2017 mazda cx5

I just installed my Garmin 55 this weekend using jhu8's instructions with the invisicord and 90 degree adapter. Thanks for the detailed pictures! By the way, for those of you with the Garmin 45's (or a 55 or 65w), they now sell a suction cup mount. That's what I'm currently using with my 55 right now, until I get the sticky mount installed. I wanted to get the invisicord up and running first.
https://buy.garmin.com/en-US/US/p/pn/010-12530-05
 
I’ve got the A119 camera from the back of my car at home sitting on a suction mount in this rental. Really uncomfortable about being without a dashcam.
 
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