2015 RRS Supercharged V8 - Loire Blue/Silver roof
Could "slaine" be onto something for those looking beyond CarPlay and the infrastructure of a mobile phone.Something interesting that I've discovered is that on the bench, if you keep the power supply connected to the yellow DVR/B+ wire (which is connected to all of the other yellow power wires in the loom) and GND but disconnect the red ACC wire the screen powers off but the unit maintains its current state so that when you reconnect the ACC wire, there's no boot-up, the system is already on.
On the main connector there are only four red wires:
2. A USB related red wire
3. Red wire coming from the splice connector that goes to the DVD unit
4. Red wire that's part of the Yellow phono plug wiring for the aftermarket camera inputs
So by elimination the only one that could be providing an ignition live from the cars wiring loom is the (3). If that proves to be the case (easy enough to check with a voltmeter) that means that if we remove (1) and (3) above from the connector and put (3) into (1)s original location that should replicate the behaviour above in the car. i.e. no waiting long times for the unit to boot up.
The possible downside is how much current is the unit pulling from the battery when it's in this sleep state? If it proves to be too much then there's a risk that it can run the battery down. But we could always wire up a small, rechargeable 12v 5a battery inline to protect against this (much like they do with dashcams).