Here's my install:
StreetGuardian GC w/CPL (thanks Jon from Pier28!), hardwired with a Vico-Power PLUS.
2005 Saab 9-2x Aero aka Saabaru (essentially a rebadged 05 Subaru WRX Wagon)
Note: GPS module tucked in the background on the dash
Note: that thing to the left of the cam coming down from the headliner is the antenna/indicator light for my Viper remote start/alarm.
Can't really tell from this angle, but the dash cam is completely hidden behind rearview mirror from drivers position
Vico Power-Plus is hardwired and velcroed into a small change cubby/drawer to the left of steering wheel with some slack on the wires so I can pull it out and adjust if needed.
Sorry I took so many pics, I figure more angles of the install the better.
Couple things so far:
1) GC placement: I could have moved the cam further up and placed it in the dots of the windshield so that the lens just pops out below the dots (it is still in windshield wiper range there), which may make it look stealthier from outside, but then the screen and lights would constantly be annoying me while driving. Yes I know you can minimize distraction by setting the screen to turn off within 15 seconds (or even faster if you stick a headphone plug into the AV in/out jack above) and putting dark tape over the lights, but I still think this setup with the GC behind the mirror looks cleaner from a driver's perspective, and I think the video quality/consistent is perhaps a shade better because placed a bit lower. I think it's also cleaner from a passenger's perspective, as no one has yet to comment on it when in the car with me until I show it to them, as it's fairly hidden even from passenger perspective. If this thing were higher up it would clearly be visible. Also wires are all hidden away in this install position, and if this cam were higher up, I'd either have to not use the wire cover (which wouldn't look good), or shave some of it down (which would take a lot of time and still may not look good!). Lastly, all buttons and memory card slot still accessible, even in this position that is on the passenger side of the rearview mirror. I prefer it being out of my way/vision, and this is the best least distracting setup I could find for driving while still being relatively stealthy from the outside as well.
2) CPL (Circular Polarizing Lens)-- STRONGLY recommend buying the CPL for this cam when installing into this car (Saabarus and all 02-07 WRX all have the same interior dash/windshield) if you live in sunny places, like here in New Mexico-- bright sun and angles of the dash and windshield can make for significant dash glare, which I noted reflected on many of my daytime videos. After I put on the CPL, the dash glare essentially disappeared, even in the brightest NM sun. The CPL I got is custom made for the GC camera from pier28 (apparently very heat resistant 3d printed plastic) and cost $40, and is well worth it in my opinion. It's a tight fit and took me a while to get it to stay on. Be careful putting it on-- one of the cross bars that holds the lens in place broke for me (it's very thin), but that hasn't affected performance yet, and the lens appears to still stay snug with the bottom bar and friction, so I will leave it be for now.