Dilemma - which connector for supply side power ex bicycle dynamo

[Daksol]

Interesting dilemma I have encountered wrt orientation M vs F of a low voltage connector.

I am setting up some wiring on a bicycle which will include a bicycle hub dynamo, lights powered by dynamo, rechargeable batteries, USB sockets for recharging electronica.

There is one location on the dynamo side of things where I want to have a waterproof connector which can easily be connected/disconnected. Dynamos generate about 6 VAC, 3W - so low voltage, low current. There are (afaik) no established standards used in this space for such a connector (apart from maybe SON who have expensive coax connectors).

I was pleased to find an option from my local supplier which is inexpensive, waterproof, latches, easily connect,  etc.  See photo. The two connectors are supplioed with short cables, are secured witha locking ring, and are waterproof enough for this application. The male connector is dimensionally the same as a conventional barrel jack 5.5x2.1mm.

The question arises then - do I connect the male or the female to the supply (dynamo) side?

** If I follow the convention from devices powered via a barrel jack, the male should be the supply.

** But if an ISO-standard Martian was to look at this - they would say that the female is the obvious choice to be the supply, given that it is shrouded, no conducting material sticking out.

So what is the correct option here?

(One point of reference is a cheap solar lighting string ex Ikea using same connector - they use female on supply side)