As a security company we install exterior surveillance cameras customers on private residences.
A neighbor of one of my customers is complaining, stating that the cameras are looking onto their property. They are not, but my customer is asking what the law or ordinance states.  I'm in Orange County, California.
    Where can I go to find what the State, County, or City laws are governing the installation of exterior cameras that are recording? 
    You can start on the Kirschenbaum & Kirschenbaum website.  Under the Alarm Law Issues you'll find audio-video laws state by state.
    Looking onto the neighbors property isn't enough to violate any law.  However the cameras should not be viewing any area where privacy is expected, and certainly not into the neighbor's home.
    We sold a monitored alarm system over the phone in Texas. We sent the agreement out with the tech to have signed. The "subscriber" was not a home when the installation took place, and instead the "subscriber" had her mother sign the agreement in her (the subscriber's) name.  Now the subscriber is saying that she never signed the agreement and should not be responsible for the agreement. 
What are our options?
Thank you,
    Hopefully no one will pick up that you did your installation as soon as the contract was signed in clear violation of the 3 day cooling off period.  That aside, you can sue the subscriber and take the position that her mother was authorized to bind her to the contract as her agent, something the subscriber herself confirmed.  
    If you can't hold the subscriber, then you can sue the mother on the theory that she was acting outside her authority, or had no authority and was therefore an agent acting on her own behalf with no principal to be responsible.
    If it's not much money walk away - option three.  By the way, I hope you have a telephone soliciation license.  If you need one and don't have it then don't walk, run.