GP33 External Alarm

Pthein

Furuno Super Fan
I find the GP33 alarm to be too low volume for my hard hearing. I see a purple/gray wire pair noted as a “speed alarm”. If I connect an external buzzer, would that alarm for all alarms such as anchor or arrival?? And if so, what is the max amp allowed for the external buzzer?
 
What is the part number for the GP-33 nmea cable so that I can hook up external alarm? Can I get just a plug or is it a cable?
 
No these connectors are hermetically sealed (basically melted on) to prevent water/moisture damage. The cable assembly must be purchased.
 
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