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Do I get 12V on OBDII pin 16 without ignition ON?

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    OBD is not a good way to power anything. What are you trying to accomplish, to keep your dashcam running all the time? You will run your battery down faster. – GdD Dec 19 '19 at 14:34
  • I am aware of running the battery down, but this will not be an issue on a short time (3-4 hours). My concern is about OBDII-pin 16 gives batterypower without ignition ON. – Tom Liljeroth Dec 19 '19 at 14:48
  • @GdD nah they have sleep and wake up mode on good ones. I leave mine powered all the time, no issue's. Its a great security camera for my van. I don't see nothing wrong with powering from OBD2, its usually the same fused line that is going to one of the cig lighter plugs anyway. – narkeleptk Dec 19 '19 at 15:47
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Not a good idea - leave the OBD connectors for OBD. Instead, a simpler solution is to look for an add-a-circuit device in your local car spares store. Plug it into a known 12V supply in the cars cabin fusebox, and run the power lead to the dashcam.

This is a much quicker solution than trying to find switched 12V in the OBD connector, and is completely reversible if you want to remove the dashcam when you sell the car.

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Yes you get constant voltage from pin16 on a OBD2 even with out ignition on. It is a direct fused line in most cases and a lot of the times it is also the same fused line as the main cigarette lighter plug (many people use to plug in accessories).

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