Fire suppression systems (10) for vehicles and industrial applications including arrangements of an input bus (24) and output bus (26) coupled to a centralized controller (20) to provide for automatic and manual detection of a fire (H) and manual and automatic system actuation in response to the fire. The arrangements further provide for system information regarding the status and operation of the system components. Additionally, the arrangement of system components provide for expandability and programmability to configure the system for the protection of multiple and variable hazards (H) using customized or programmed detection and/or actuation. The systems include configured connectors (25) and colour coded schemes to facilitate system installation.