DR970X-BOX Plus

I did this as well, blackvue makes some great cams

I installed a Blackvue DR-970X Plus Box 2-Ch (that's a mouthful). I installed it like any other camera on the past. Power wire to a fuse tap for an always on source, parking mode cable to a fuse tap on a source that turns on/off with the ignition. I then set the camera to turn off after 6 hours or a certain voltage. I haven't had a problem with it at all, and as soon as I turn off the car it goes into parking mode. I ran the wires from the fuse panel on the driver side to the box with brains on the passenger side floorboard, then ran the wires for the front and rear cameras under the trim. Very small cameras on the windshield, and not obtrusive at all. I can't see the front camera behind the rear view mirror unless I lean forward.

I have a BlackVue 970X Box 2-Channel system (front and rear-facing cameras) on my ND3. It's great for a Miata because it has a very small/compact windshield camera that blends well into our small windshield. The size is made possible by a box installed in the hidden storage compartment behind the driver seat that contains electronics that would otherwise be in the camera itself. The two things I dont like are that the app can be slow to connect to the camera and that the rear camera is lower resolution than the front. I had it hardwired by a car audio place so that it records both while I'm parked and while I'm driving.

The BlackVue DR970X-BOX-PLUS is probably one of the most heat resistant dash cams as the recording unit is kept separate from the cameras.

I’m using the BlackVue DR970X-2CH Box Plus.