Here you will find Car Alarms wiring diagrams for the most known brands as : Viper, Clifford, Ampire, Defa, Sicura , Python, Cobra, Autopage, Crimestopper, Audiovox etc. 

Viper Car Alarms Installation Diagrams :

Viper 791 XV Install Manual
Viper 560XV Installation Manual
Clifford Avantguard 5 Installation Manual
Avital 2300 Installation Manual
Clifford Matrix RSX 3.3 Installation Manual
Hornet 564T Installation Manual