I had a professional installer mount a Garmin 57 and a Thinkware battery extender today for when it's parked. Installer spliced the wire underneath the plug so I can still use the 12 volt power for something else. Nice and neat. Barely any wire showing near the camera.
Installer is in Los Angeles.
Here are the pics. I'll report back if I have any issues. View attachment 13098View attachment 13099View attachment 13100