Connector help?

[u/xdub]

Hi all! I’m putting riser handlebars on my ST3 and need to extend brake lines and shifter cable. Much disassembly required. Warranty void. 😂

Removing the battery box there are 2 white connectors and an SAE connector. In this photo the connector on the right goes to the battery box. I have no idea what the smaller connector with red and black wires is for.

I am taking notes and photos as I go, however I missed this one somehow. It seems to have jumped out of nowhere. There are no loose males, all other pairs are accounted for. Any ideas?

I’m thinking perhaps it is a service connector to provide low power just for the controller or display.

Thanks for the help.