External mic for Garmin lose connection

 

I bought Garmin external mic today and treid to connect it to my Nuvi 760 but found that connector is too lose and won't stay in. Am I doing something wrong? I will appreciate your help.

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Iphone XR, Drivesmart 61,Nuvicam, Nuvi3597

Sorry, I found it. I was

Sorry, I found it. I was trying in audio out jack. Mic input is in the cradle.

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Iphone XR, Drivesmart 61,Nuvicam, Nuvi3597