Reconnecting Audio on Wireless Cameras

[tommy]

This may not be the right group so please redirect me if applicable.

I'm interested in buying a miniture wireless color camera at one of
those spy shops but was told that the FBI forced them to disable the
audio. I'd like to know if anyone has ever reconnected audio on one
of those and what it took. It looks like the audio microphone is on
the camera and the receiver is equipped to receive it so I am hoping
it is just a jumper.

Thanks in advance!