Typically you need to add another wire from the 430W to the 330ES. Typically there is no serial output from the 430W to the transponder, so you need RS232 Out #2 (P4001 pin 58) or RS232 Out #3 (P4001 pin 41) or RS232 Out #4 (P4001 pin 54) to RS232 In #2 (P3301 pin 24) assuming RS232 In #1 (P3301 pin 22) is being used for encoder altitude in. As mentioned, the extra serial output would need to be set as ADS-B+ on the 430W.