yahhh... that is now problem to buy tool only for one differential is not clever.
I think the best solution is that you can offer and make me one plus send him by Fedex but for now first I'll collect information.

I didn't understand you for Peter why he have problem with 12V I think that you have also electrical coupling with 12V. ok what I see he trying to integrate Viscokuplung in housing from kangoo differential and it is not good what I see.

so now when you drive 2wd when you switch off 4wd, did you feel differences for fuel spending ? normally it must be difference my minimal spending fuel is 8l/100 KM.