hey guys i bought a 92 civic VX had a real ****ty motor (d15z1) had bad rings and a rod knock . I have a d15b7 a buddy gave to me we put it BUT the d15b7 engine wiring has only 3 pulgs <-- the one on the passenger shock tower that clips into the ones that goes directly into the ECU /./// AND the VX has 4 pulgs ones not pluged into anything the motor will crank but wont start i got spark and fuel any one know whats up or what i can do please help

agian im talking about the passenger end of the engine wiring harness there are 3 plugs on the DX harness but 4 coming from my ecu \ firewall one is not pluged in please help i only have one car and have been bumming ride to school and work for a few days now please help

thanks in advance