Hi my car is civic 1999 1.4 ej9 , also i have 1996-1998 b18c jdm type r engine thats obd2a engine my car i think is obd2b engine ( ecu code 37820-phx-g11 1151-100802) i want to install hondata p28 ecu . I have obd2a to obd1 ecu conversation but i want to know how to connect dashboard loom with my ecu ? Should i buy any conversation harness or what