I'll try to add it, but i discovered that there are several versions (3, 4, 5 and 6-pin) but only 3-pin is used for charging vehicles afaik so i don't know if socket:xlr is correct or if socket:xlr_3pin should be used instead. It also isn't a socket but rather a cable with a male connector at the end so maybe socket:xlr_cable or socket:xlr_3pin_cable.