- Jan 27, 2013
- Reaction score
- Sydney, Australia ~ Shenzhen, China
- Dash Cam
- Too many ¯\_(ツ)_/¯
OBD is a connection standard but it's not a standard protocol so no guarantee that the vehicle manufacturer will make this permanently live, the fact that you have a PMP and your power cuts out suggests it is cutting off, for a lot of recent BMW models it is necessary to go direct to the battery for the permanent feed as the computer can disable any circuit which has a load that is not meant to be thereThanks Jokiin. I thought the ODB feed should be permanent? Would that not be the case? I have had the circuit tester on it and seems to be still supplying power.