It worked!
Thank You guys!
had ordered a cable from Bosscom with the right wiring (except yellow and grey) that came today.
Peeled of 5 cm of the outer plastic shield, cut the yellow and grey and soldered the yellow to the grey.
Not very tidy but it will have to do for now.
If someone need a PowerLink/Passive cable(except for Core) in any length it's part no 01349911 (1 m).
Baaz