Got a cheapo Y cable off EBay in the post this morning...
Hooks up fine to old Nano. Ip5 works fine over Bluetooth for calls.
I have no music on iPhone, but I do have a new Nano7 with Bluetooth... This hooks up over bt but it seems can't be controlled by the car - which is a shame.
I am waiting on a lightening adaptor, then I will try Mini connected and the Nano7 that way