The maximum for Bolex electronics is 15V. This ~45cm (18") cable use a right-angle 7-pin Tuchel connector from Amphenol to connect to an EBM. It includes an inline switch that is ~15cm (6") from the end of the Tuchel connector's cable sheath.
Bolex ESM/EBM 7-pin Power Cable w/ Switch, Unregulated D-Tap, ~40cm (16")
Bolex Door And Finder For Bolex H16 Non Reflex Cameras Bolex
Bolex hand grip for Bolex H16 Reflex camera RX3 RX4 RX5 No Adapter Plate
BOLEX Lens Turret LOCKING SCREW For Bolex 8mm Small Movie Cameras
AXifeed EBM Breast Milk Storage Bottles, 50ml, Pack of 10
Bolex Paillard Voltage Regulator for Motors MCE-17 B