The follow steps show how to install the IMI-1000 RNS510 retrofit CarPlay and Android Auto kit.
Set dip switches (always follow the switch settings detailed on the label on top of the module)
Ensure power is off to the head unit, ideally disconnect battery earth
Remove the RNS850 head unit by initially removing the trim surround with a trim tool
Once removed, remove all securing screws to the display unit
Remove head unit
Connect the IMI-1000 kit as per the diagram below
Re-assemble and set up IMI-1000 as per the supplied IMI-1000 Setup Manual.