Civic motor swap question
 

i recently bought a 1990 honda civic shell to put my 1991 1.5 l engine in. the question is the shell is an si, complete with harness. the main wire from the motor (trottle body on the driverside) doesnt plug in to the existing wiring harness on the car. there is 12 wires on the 1.5 going into the plug with only 8. what should i do? i really hope i dont have to pull the whole wiring harness from the car to put mine in. any help is appreciated. thanks justin