The author remixed this model.
Vaxxi's JST-XH 2-pin splitter with some mods:
1) Supports 2.54mm pitch StripBoard PCB here: https://www.amazon.com/dp/B00LLQFRAU?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_1
2) More plastic making the design more rigid
3) Chamfers applied to reduce fitment issues and improve looks
4) Back panel supports the bottom of the PCB when fully assembled and mounted, preventing the connectors and board from moving