Exchange problems with the Ford Sierra wire harness

Hello everyone. Have a really serious problem. Have a Sierra 2.0 DOHC 88KW BJ.90. Would like to install a wire harness from Sierra 2.0 Ghia DOHC 88KW BJ 92 and I encountered the following problem. A connection cable from the main wire harness (connection below the suction bridge) to the motor wire harness (from the motor usually 2 plugs, ener weibl, one male, with 8 contacts each) does not fit to the motor wire harness because it has contacts instead of 8 contacts 9 and is thus also larger than the plug with 8 contacts. contact(Both plugs maenl.) Unfortunately, I don’t have the power harness to the main wire harness. What do I have to do to make it work? I am grateful for any help I can think of.