Service system for supplying passengers in a passenger space of a means of transport, in particular of an aircraft, the passenger space being provided with seats having a spacing between each other in a longitudinal direction of the means of transport, the service system having: - a service channel; and - a first plurality of service modules having: - at least one service component arrangement having one or more service components (12, 14, 16, 18, 20) for individually supplying one or more passengers; and - a cabin lighting unit configured in strip form along the longitudinal axis of the service module and integrated into the service module on one side of the service module for illuminating the passenger space of the means of transport, in particular of the aircraft, wherein the at least one service component arrangement comprises an electrical service component arrangement having one or more electrical service components (12, 14, 16, 20), wherein the one or more electrical service components (12, 14, 16, 20) and the cabin lighting unit are connectable by way of a common service plug to the same interface of the common service channel, and - a second plurality of service modules having: - at least one service component arrangement having one or more service components (12, 14, 16, 18, 20) for individually supplying one or more passengers; and - a cabin lighting unit configured in strip form along the longitudinal axis of the service module and integrated into the service module on one side of the service module for illuminating the passenger space of the means of transport, in particular of the aircraft, wherein the at least one service component arrangement comprises an electrical service component arrangement having one or more electrical service components (12, 14, 16, 20), wherein the one or more electrical service components (12, 14, 16, 20) and the cabin lighting unit are connectable by way of a common service plug to the same interface of the common service channel, and wherein each of the second plurality of service modules has a length along the service channel that is different from the length of each of the first plurality of service modules along the service channel, and wherein the first plurality of service modules are replaceable by the second plurality of service modules so that either the first plurality or the second plurality of service modules is connected to the service channel in order to supply the passengers in said space, depending on the seat spacing therein, and wherein the length of the service modules of either the first or second plurality of service modules is, in each case, as large as the seat spacing of the seats. - a service channel; and - a first plurality of service modules having: - at least one service component arrangement having one or more service components (12, 14, 16, 18, 20) for individually supplying one or more passengers; and - a cabin lighting unit configured in strip form along the longitudinal axis of the service module and integrated into the service module on one side of the service module for illuminating the passenger space of the means of transport, in particular of the aircraft, wherein the at least one service component arrangement comprises an electrical service component arrangement having one or more electrical service components (12, 14, 16, 20), wherein the one or more electrical service components (12, 14, 16, 20) and the cabin lighting unit are connectable by way of a common service plug to the same interface of the common service channel, and - at least one service component arrangement having one or more service components (12, 14, 16, 18, 20) for individually supplying one or more passengers; and - a cabin lighting unit configured in strip form along the longitudinal axis of the service module and integrated into the service module on one side of the service module for illuminating the passenger space of the means of transport, in particular of the aircraft, wherein the at least one service component arrangement comprises an electrical service component arrangement having one or more electrical service components (12, 14, 16, 20), - a second plurality of service modules having: - at least one service component arrangement having one or more service components (12, 14, 16, 18, 20) for individually supplying one or more passengers; and - a cabin lighting unit configured in strip form along the longitudinal axis of the service module and integrated into the service module on one side of the service module for illuminating the passenger space of the means of transport, in particular of the aircraft, wherein the at least one service component arrangement comprises an electrical service component arrangement having one or more electrical service components (12, 14, 16, 20), wherein the one or more electrical service components (12, 14, 16, 20) and the cabin lighting unit are connectable by way of a common service plug to the same interface of the common service channel, and - at least one service component arrangement having one or more service components (12, 14, 16, 18, 20) for individually supplying one or more passengers; and - a cabin lighting unit configured in strip form along the longitudinal axis of the service module and integrated into the service module on one side of the service module for illuminating the passenger space of the means of transport, in particular of the aircraft, wherein the at least one service component arrangement comprises an electrical service component arrangement having one or more electrical service components (12, 14, 16, 20),