The more exterior black wire is thicker than the other ones. You can’t really see it in the photos. I am thinking it is the same as the grey wire labeled as ground in the AE pic.
What am I measuring? The white box that clips in is exactly 1cm. All these connectors (which I believe are called JST) with 5 pins are labeled as being “1.25” but I can’t tell if that’s dimensional. But what else would it be? I can’t find any that are 1cm.
Thanks!
I think I miiight have found an exact match: https://www.aliexpress.com/item/1005005073296395.html Not sure what a waterproof USB port is used for but it should do the trick. I’ll buy a few other connectors of similar size to hedge my bets and do as you say if this one doesn’t quite fit.
Looks like I’ll be starting a new plastic compartment container…