Hey Jeff,
my spindle (Datasheet) has a Phoenix M17 connector, and I bought what I need to make the cable myself.
If you are able to remove the back cover of the spindle,
– Source: Still a bit unclear on proper spindle grounding – cnczone.com
you could replace the connector and use the serious industry-grade Phoenix M17 Motor Power connector that my spindle uses.
The matching connector on the spindle would be this one or this one for device side:
What I describe here would allow you to
- make your spindle cable yourself
- avoid any soldering, as it is crimped
- avoid “aviation” connectors that cannot cope with the needed thicker spindle power cables