System and method for controlling operation of one or more accessories for a vehicle

A system for controlling operation of one or more accessories for a vehicle, the system comprising:

• a configurable user interface (UI) module associated with a first processor and a first memory, the UI module configured to receive input, and configured to generate one or more outputs, the first memory storing a respective one or more UI rules governing generation of the one or more UI module outputs, and storing a copy of a shared parameter list;
• and
• a configurable controller module associated with a second processor and a second memory, the controller module being operable independently of the UI module and communicatively connected to the UI module, the controller module configured to receive input, and configured to generate one or more outputs to effect control of the one or more accessories, the second memory storing a respective one or more controller rules governing generation of the one or more controller module outputs, and storing a copy of the shared parameter list,
• each of the UI module and the controller module being configured such that, responsive to each input, the processor of the respective module defines a state in the associated copy of the shared parameter list and communicates with the other module to cause the state to be defined in the other copy of the shared parameter list,
• wherein each rule requires at least one specific state to be present in the shared parameter list to cause generation of an associated output, and
• each of the UI module and the controller module is configured such that, responsive to each state being defined in the shared parameter list, the processor of the respective module assesses the, or each, associated rule to determine if the, or each, required state is present in the shared parameter list, and, responsive to determining the, or each, required state is present, the processor of the module effects generation of the associated output.