Motor conversion

Hello guys! I have a huge problem! My Omega B 2.5 V6 was in the garage for 1.5 years with a fat engine damage, until 2 weeks ago. Someone offered me an accident Omega with a 3.0 V6 which still ran when I got it. So zack started this to battles to save mine. (who still needs parts can possibly I still report that then) Everything went great until I remembered that I should have had to expand the drive-away-dperre. There he was now the super ga u! But all the same he should give with the control unit of the 2.5 V6 also a tone of himself or? But there is the problem he says nothing ! I can let him turn normally with ignition key but I get no power to the petrol pump and ignition I also do not have. All plugs sit and battery is full! I have the Schei… guess the immobilizer wants to strangle me in there. Help Help LG Tommi