Before I rip everything apart.. again..
Any idea which fuse or how power is sourced for the 12v/usb switch (1) that is used to power up the usb ports and other 12v overhead switches when the vehicle is not running?
Reason being I'm contemplating powering all the above by the Aux battery via a victron smart battery protect I have installed to ensure against another flat battery x2 situation (partly my fault leaving the main power switch (1) on and perhaps how the smartpass works to support the starter battery - end of the day I had two flat batteries)
An understanding of switch 1 would help with options and which way to go. I may remove the smartpass completely and just have the D250SE in place to charge the Aux battery @ 20amps max via alt or solar.