Combination of an aircraft navigation light and a supplemental exterior aircraft light; wherein the aircraft navigation light comprises: a navigation lighting arrangement, comprising: a power input, coupleable to an aircraft on-board power supply network (190, 192), at least one navigation light source, and a power conditioning circuit, coupled between the power input and the at least one navigation light source for conditioning a power flow from the power input to the at least one navigation light source; an auxiliary power supply, coupled to the power conditioning circuit for diverting power from the navigation lighting arrangement; and a power supply output, coupled to the auxiliary power supply, for supplying power from the auxiliary power supply to an exterior aircraft light, external to the aircraft navigation light; wherein the aircraft navigation light and the supplemental exterior aircraft light are separate light units; wherein the supplemental exterior aircraft light is coupled to the power supply output of the aircraft navigation light for receiving power from the auxiliary power supply of the aircraft navigation light; and wherein the supplemental exterior aircraft light is an exterior aircraft image projector, configured to be installed on an aircraft for projecting an image onto at least one of a ground portion below the aircraft and an exterior surface portion of the aircraft. wherein the aircraft navigation light comprises: a navigation lighting arrangement, comprising: a power input, coupleable to an aircraft on-board power supply network (190, 192), at least one navigation light source, and a power conditioning circuit, coupled between the power input and the at least one navigation light source for conditioning a power flow from the power input to the at least one navigation light source; an auxiliary power supply, coupled to the power conditioning circuit for diverting power from the navigation lighting arrangement; and a power supply output, coupled to the auxiliary power supply, for supplying power from the auxiliary power supply to an exterior aircraft light, external to the aircraft navigation light; a navigation lighting arrangement, comprising: a power input, coupleable to an aircraft on-board power supply network (190, 192), at least one navigation light source, and a power conditioning circuit, coupled between the power input and the at least one navigation light source for conditioning a power flow from the power input to the at least one navigation light source; a power input, coupleable to an aircraft on-board power supply network (190, 192), at least one navigation light source, and a power conditioning circuit, coupled between the power input and the at least one navigation light source for conditioning a power flow from the power input to the at least one navigation light source; an auxiliary power supply, coupled to the power conditioning circuit for diverting power from the navigation lighting arrangement; and a power supply output, coupled to the auxiliary power supply, for supplying power from the auxiliary power supply to an exterior aircraft light, external to the aircraft navigation light; wherein the aircraft navigation light and the supplemental exterior aircraft light are separate light units; wherein the supplemental exterior aircraft light is coupled to the power supply output of the aircraft navigation light for receiving power from the auxiliary power supply of the aircraft navigation light; and wherein the supplemental exterior aircraft light is an exterior aircraft image projector, configured to be installed on an aircraft for projecting an image onto at least one of a ground portion below the aircraft and an exterior surface portion of the aircraft.