Here is the Dial Wiring Diagram for the two wire ringer 302.
This also agrees with Dennis's written diagram, and goes side by side as a two part diagram, to get a complete wiring diagram for the W.E. 302 two wire ringer telephone.
If you have any trouble getting this version to work or if you find a mistake, please let me know right away.
D/P
If you lay the Base diagram side by side next to this diagram, they will match up to form a single diagram.
Part three will be the Handset diagram.
D/P