Brilliant, thank you. I’ll give this a go at the weekend. What’s the safest way of removing the permanent live fuse to connect the piggy back? Is there a way to switch all the power off so the fuses are’t live? Don’t want to zap myself.Yes you can swap from ignition live to permanent live fuse with no issue. I did that to as the battery with parking mode on together with rear camera did not last very long. I have 522gw installed.