wiring conversions

Ok I am puting a B18a1 into a 1991 CRX. However I am in need of a wiring harness for the car. The car has already been converted from the D15 to a D16y7. So if anyone can help me out by either having one for sale or being able to help me out by telling me what or how to convert what I already have. Oh and I have a 1992 Teg donor car. The car can’t be saved.