2 conductor -
This setup is semi common and allows the user to do basic mods. It features 2 pvc coated wires, and a bare wire.
The way this pickup wire works is by pre-doing the series link for you. So the screw coil’s start wire (RED) is connected to one wire. For this example we say the white wire. the Screw and slug coil finish’s (Black) are soldered together. The Slug coils start is then soldered to the black wire, and the bare is soldered to the baseplate. So in this set up you the consumer has to finish the ground. You do this by soldering the black and bare wire to a pot casing.