Hello . I have bought Honda Civic 90 4 generation sedan but engine was blown . So i bought a another honda civic 5gen with d15b7 engine . Now that engine was instaled in my 4gen sedan , i need to converse wiring harness from OBD0 to OBD1 to P06 ecu . What first i need to do ? I dont found good DIY for me . P.S Sorry for my bad english .