Well, I don't know. You don't want it running off the battery all the time line cause then the camera would be on all the time. You just want it on the AMP turn on line.
Usually I would think tapping off the power turn on signal for the amps would probably be fine. It depends on where that line is coming from. The Z1 has a 300mA supply for that line.
Just might want to find out how much power that camera draws (look at the second to last page here).
http://www.crimestopper.com/techweb/Ins ... 00_ins.pdf
The manual says 180mA typical. That leaves 120mA left for the amp turn ons. And I don't know what those take.
You are probably fine, but don't take my word on that.
I would ask your installer if they hooked a relay to the battery and then ran the Z1 amp turn on to the relay. Then out from the relay to the amps. If so, then you are fine with that point.
If not, if the amp turn on at the amps themselves comes from the Z1 itself, then I would make sure the turn on lines for the amps (all total) don't draw more than 100mA. If it's being powered from the Z1 then you could put a relay there, and hook the relay to the battery connection that is going to the amps and use that for turn on.
I might be a little too cautious. But with a $2K head unit... better safe than sorry.