For Honda 4 Pin Plug Diagnostic Connector OBD2 Code Reader Scanner Cable Adapter 4 pin Plug Adapter for use with certain HONDA motorbikes. This adapter converts a standard 16 pin OBD2 type plug to the HONDA 4 pin plug for plugging into the motorbike diagnostic socket for CAN Bus models. What is CAN Bus? CAN Bus is the latest electronic communication type on motor vehicles. Typically used with diagnostic readers to convert the standard 16 pin plug into the required 4 pin plug. Can be used with your Code Reader or wireless OBD2 Bluetooth reader/resetter Support list: CBR1000RR 2017-onwards CBR600RR 2017-onwards VFR 800 2017-onwards CRF1000 (Africa Twin) 2017-onwards CB1100 2017-onwards NC750 2017-onwards as well as other models with 4 pin diagnostic connector. .