I have an 11 mini convertible and just got one of these Bluetooth setups for Xmas. Wondering what the easiest way of splicing this is please? Where did you put yours?

Thanks for any assistance

 

Looks like you'll need to do more than splice; the radio in your car uses a FAKRA connector rather than the DIN connector that kit comes with (unless it comes with an adapter, which I kind of doubt) You'll actually need two adapters, the first will have to be a Male FAKRA to Female DIN, and the second will have to be Female FAKRA to Male DIN.
I'm not sure what the wiring is in your car, though you can probably splice in to the cigarette socket, since that's switched with the ignition and fairly nearby.

Plan on this taking all day