Looks like the X6031 connector route may not be the right one: I quickly looked at mine and there is no pin 3 and 9 as expected, but it's not there on both side so just wiring from the slip ring to the X6031 won't work. You may have to go all the way yo the transmission.
Here's a picture:
I'll try to reach out to the guy from the YouTube video and try to get clarification....
Right now the only thing I can think of is having to wire it all the way to the transmission: pin 4 and 5 in the mechatronic are the pin used to control + / - signals.