Can't help you with specifications but it might be worth opening a ticket with Fanatec support: they can sell you parts that are not available on the website (like cables, loadcells, replacement pins, etc.). Postage will make it expensive but you'll be sure to have the proper part. If they still have some available of course: v1 was disconnected a while ago I think, not sure if later versions use the same supply.
They can be a bit long answering and it seems they always ask for a pict, which could be a problem here... I had to send them a pict of the USB cable I managed to rip off earlier this year, but the experience with them was flawless, you just have to follow their indications.