Geoff Mills wrote:

That's hopeful. How are the flying leads attached to the terminals?

Solder - you just solder some wires to the pins.


Is the heatshrinking part to do with wrapping the finished cable ends
in plastic material for extra insulation and/or support?

Each of the flying wires will need to be soldered to your 2 wires, going
to the other 2 sockets. Once you solder them, they'll look like a Y.
This solder joint needs insulating, and mechanical support. Heatshrink
achieves this.


--
Grunff