where to hide alarm cpu?

ok cool i got my siren wire through this one rubber part and hidden in with all my other wires.   Any particular battery you recomend? And could i run both batteries into the alarm, so the dry cell will be kind of my backup?  How do siren backup batteries work?  Isnt it kinda pointless if a theif is gonna cut ur siren wires he'll cut off the siren back up battery wires too?  Sorry for all my newbie questions

My alarm acts very crazy.  I checked everything and seems that i wired it fine.  I dunno if its interfering with my factory lock unlock system?  E.g.  When my siren sounds, it is uncontrollabe, i cant stop it for sum reason.  Pressing arm disarm wont do anything, after like 30 seconds the system automatically disarms itself, then my arm/disarm button works again.  When the system is unarmed, my factory unlock doesn't work, but when it is armed, they do work. The alarm is not able to lock/unlock.  When i am programming my features, everything seems to be ok, the siren chirps on confirmations, the controller works fine too. My parking lights dont flash when arming and disarming.  Wut could be wrong?  I checked all the wires, they are wired to the correct places.  Before i soldered everything together, the system seemed to work fine, but now it has a mind of its own.  Would it have to do anything with the power source?  I connected my power wires to the 12 volt wire inside, i don't think that would make a difference would it?  Or maybe the guy sold me a jacked up alarm chip....

nm i fixed everything.  The only problem now is interior lite dont turn on, but thats a very little problem.

My alarm installation has been successful, it works pretty good. I annoyed the crap out of my neighbors while programming my alarm    I hid all my wiring, looks very oem.  Also, no one will every find my siren, i found a special place for it.  Special thanks to velocity motors and for the owners of this website and others who helped me through this project.  The only problem now is that my interiior light dont come on when i open the doors, it worked a while ago, but now it doesnt.  Kind of strange but im tired of messing with my car and im gonna call it a project for now.  Again thanks to everyboday.

nah, the light works i could turn it on, but the part where i open the door and close the door it doesnt turn on.