If it weren't grounded to metal that had a connection to the battery *somehow*, it wouldn't work at all. It's not grounded in the sense that it protects the device (what people typically think of when they hear "grounded"), it's grounded to create a circuit with the fuse connection, i.e., it eventually makes its way back to the negative lead on the battery. TLDR: If it's working, it's grounded.
On a side-note: I noticed when I remote start the car, sometimes the
dashcam will not turn on/activate after "engaging" the car when getting in. I have to pull the USB connection from the
dashcam and plug it back in for it to actually start. Happens maybe 1 or 2 out of every 10 times. I'm on the 20A power outlet fuse, has anyone experienced this or can think of something that might be causing it?
I have a similar experience with my viofo A129 pro
dash cam & HK3 hardwire kit. I used 20amps sunroof fuse, and i tapped in with a fuse tap, and I gave 10amps fuse for the
dashcam.
So, basically, the
dashcam works when the engine is off, but every now and then, the
dash cam would restart randomly, especially when the engine is off, it also restarts when the engine is on.
Problem: The sunroof, although it provides 12V, it is hot, live wire yes. But it is not constant. When i was using multimeter, after holding it for like like 2-3mins, theres a volatage drop to 0, and it slowly comes back to 12v within few seconds.
So, when this happen,
dash cam doesn't receive enough power, so it automatically restart.
Solution:
I think i found the answer, but I'll test it tomorrow.
Option:
A. Use OBD fuse, although currently 7.5amps in OBD, i can tap in with fuse tap and add another 5amps for
dash cam.
B. Tap the fuse from engine compartment using fuse tap, and pass this wire through the firewall (takes a bit of time). Problem is, you wont be able to fully close the fuse.
C. Direct the wire from the battery with fuse in-line, and pass that wire through firewall. (takes a bit of time also).
I'll update how it goes tomorrow.