Hi there:

It could be a great idea desing a power cable harness with BMW navigator craddle connector.

This connector is an standard and is installed in practically all modern models, even without navigator craddle installed as factory equipment. It´s located behind the dashboard, so it´s perfect for a quick, simple and non destructive installation of AIO device. Motorbikes without navigator cradle has a dummy plug in this connector, but is usable removing that dummy plug.

The connector needed is easy to buy in some China on-line stores.

This connector also have a CAN line, so this harness could support the CGRC connector.