I have a Nikon camera with a pair of Godox TT685N speed lights. I got the opportunity to get a couple of Nikon speed light battery packs for next to nothing. Godox uses Canon power ports for all their flashes. I hate throwing away perfectly good battery packs, but somehow I have to convert that male Nikon plug into a male Canon plug. But I don't have the pinout information and my Googling lead me to battery pack vendors. :)
So, I did find the Canon info: GND and +300V pins have an obstruction between them. I just need the Nikon info now, and then source a Canon plug.