easiest is to use a junction box designed to support two mics and two push
to talk switches
connect wrong, one PPT could activate both mics

we got our "Becker" box from Wings and Wheels for our Grob Twin II, it
included the speaker.
works great!

BT

"yuval" wrote in message
ups.com...
Hello,

I was asked to add a second mic to our Twin Astir (it has mic only on
the front seat), can someone give an idea on how should I connect it?
can I just connect it in parallel to the existing one?

Thanx,

Yuval