Well, hanging it from my existing mirror was a fail. So before my trip last weekend, I did a temporary setup. It can be completely removed in under 10 minutes, and worked very well. It provides both forward and reverse video recording, a digital rearview mirror that hides the pillars and passengers and luggage, provided better low-light forward vision. It comes on when I start, and shuts down after parked a few minutes. It will monitor the car while parked, and records for about 8 hrs of driving on a 65gb micro-SD, then rolls over.
This is a total ghetto build done at the last minute very quickly, so replacing white zip ties with black in on my list, and I need to hide wires better. But it does not block my vision at all, and worked flawlessly for ~1,500 miles so far.
A digital rearview dashcam - https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
A Cellphone Holder - https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
A OBDII power supply for cameras - https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Micro-SD memory sticks - https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
A power drill, small drill bit, 4 small screws, some computer wiring standoffs, some zipties, and a utility knife. This is stuff I have laying around.
I pushed the wires under the interior door frame black trim, or used the computer wiring standoffs to hold them in place. They do not mar the plastic, but they don't stick to leather. Stronger tape would be better though. When it's hot, they can come unstuck.
I trimmed the straps on the Digital Mirror, so they are flat. Then drilled a clearance hole in them, then a pilot hole in the iPhone Holder clamshell. Then put the mirror on the open clamshell with the screws.
I used high quality 2-side tape to hold the rear camera on, which worked well in heavy rains. Yeah, I have two side tape in stock.
Picture 1 is what it looks like from the front.
Picture 2 is what it looks like from the driver's perspective, notice it's not in the way of anything.
Picture 3 is where I put the rear camera, but it's supposed to be on the plate frame.
Picture 4 is where the OBDII power supply plugs in. All it does is draw power from there instead of a cigarette lighter. It knows when the car is off, and has a delay function.