FRANCE neon transformer
Locate a datasheet that represents your GF circuit.
https://a89b8e4143ca50438f09-7c1706ba3fabeeda794725d88e4f5e57.ssl.cf2.rackcdn.com/spec_sheets/files/000/018/604/original/france-15030p5g2ue-instructions.pdf?1442934472
The high R coils will be secondary.