Finally got my car back yesterday after over 5 weeks- apparently the pin output on the new FSU had changed from the stock one. This was a MB part being replaced at a MD dealership by factory techs and it took them 5 weeks! Crazy!!!

 

Howsit bud, yeah I just changed out my fuel pumps, and you quite right some issue MB has changed the power pins as well so the old connecter cannot work with the new lid of the pumps. Bloody ridiculous man, and no letter or instructions nothing from MB to notify about this. So just used the new pumps and bucket housing with the old lid... I reckon it's a manufacturing defect from who ever makes the new units and they got the mould/setup crosswired! Glad your guys got it sorted! Now let her rip