QUOTE(4WD_er @ Oct 3 2018, 10:04 AM)
A technical question, I have seen some pics (on Aliexpress or Taobao I am not sure now) THAT there are people hard wire the USB car charger pin by shouldering + wire and - wire to our car's interior dome light power source. THEN plug in a short USB cable from dome light USB port to the dash cam.
This way there are 2 advantages :
1. free up your 12V socket at central console for other stuff
2. some car has the dome light dimming function after you lock the car for 10-15sec, the dashcam will also follow that since the power source is tapped from there. Better still if a dash cam has a tiny battery in side, it will extend it for another 15 or so sec of recording.
Anyone knows how to do ? Of is there anywhere I can read up the detail wiring work ?
Can be done but it's not a good/complete solution.
The light dimming function only works with the dome light. You'll need to tap your dashcam into the dome light for the dimming effect. But the dome light is only turn on when you open the door or manually turn on the light. Then your dashcam will only power on during the same time. But not all dome light works the same.
Also, the dome light is direct power from the car battery. If you tap that then your dashcam will be on 24/7, I foresee a car battery drain and dashcam overheat issue here.
Nowadays dashcam can be powered by using a USB car charger or via the car fuse box via a hardwire kit.
This post has been edited by blurjoey: Oct 3 2018, 10:32 AM