|Coat the exposed wires with solder (both ends, all wires)|
Solder the exposed wire to the contact microphone
|Put the tip onto the wire|
|Thread the plastic casing over the soldered wires before threading the metal cases over the plastic|
The final process was to apply 2 coats of plasti dip (a sealant) onto the contact microphone in order to make the microphone waterproof and therefore turn the contact microphone into a hydrophone.
I look forward to using this new piece of equipment and discovering what can be heard.