I am building myself a MIDI patch cable. According to resources such as http://www.leadsdirect.co.uk/technical-library/pinouts-wiring-diagrams/din-midi-wiring/ the middle pin of the DIN connector (pin 3) should be connected to the 'shield/screen/earth'. I am assuming it means the cable's shield.
What about the DIN connector's shield? Should that be connected to the cable's shield or left unconnected?
What do you recommend regarding pins 1, 5? Connect them or leave unconnected? Are there any cons to connecting them?