Oh Richard, I‘m VERY happy with your help!!!
I‘ll make a bridge like you show in the picture and look (and hope hear) what happens.
On the fuelrelais there is a number, I ask Mr. Google, usual Ford Focus fuelrelais. In Mainz there are some helpful and friendly guys (and massive petrolheads) at „Autoteile Henrich“, there I buy my parts for very good prices.
Regards René