I use a small set of jumper wires hidden in the rear cowling under the rear seat.This is where the RED cover of the data connector is located.
As for the manual, I have it in PDF on my cell phone so, I'm using this compartment for boosting cables since there is no kick start pedal on motorcycle anymore, so I won't get stuck in remote areas if I need to start a DN-01 (automatic) with a dead battery (I'm using a light but more powerful lithium rechargeable 12 V battery now).