Dash cam install - which wire is always hot?

I bought the FalconEye 3 camera dash cam system. Another trucker recommended it to me.
Here's the link. Haven't installed it yet, so I'll have to get back with a review once it's set up.
One thing I don't like is, it doesn't come with directions. You have to go to their website and look up each feature to see how to use it. The videos are not the greatest and one is pretty pituful. There are no install videos but the pamphlet does contain a basic wiring diagram for the install. Again, not impressed.
http://www.dashcam.co/collections/m...h-mirror-one-power-source?variant=27006185544

 

Here's a link to the one Balakov100 was referring to:
http://dashcamerasreviews.com/street-guardian-sg9665gc-v3-2017-edition-review/

 

FalconEye is owned by TD Electronics (Previously Top Dawg Electronics) and when you call TD, you get someone who answers, "Hello". Yeah, not too professional. And it doesn't get any better with whoever you talk to there. I think there is a separate number for FalconEye on that website when you're ordering, and they are helpful and professional, but the TD Electronics is not big on customer service.
I had a problem with them a few years ago and they wouldn't stand behind their product. Had to go through VISA to get the refund. I didn't know FalconEye was owned by TD, otherwise I wouldn't have bought this product. But, now that I have it we'll see how things go.

 

You're right. I did order the hardwire kit with it.