Hi there, you will need to add a +12V ignition feed to pin 4 on the white connector. I will make a guide this weekend I hope that shows exactly where to take it from, hopefully I will have time.
A bit into the technical side of it: The CN+ talks to the ECU through a CAN bus. The wiring loom already has the can bus wires on it, but if you've retrofitted the CN+, you will need an extra wire from the ignition feed in order to activate the CAN network on the CN+. After this is done you will also need to do a proxy alignment to get rid of the flashing mileage problem.