An assembly comprising first and second headlights for a motor vehicle, the first and second headlights respectively comprising first and second light sources and first and second power supply control devices respectively designed to supply a current of predetermined intensity to said first and second light sources, the assembly comprising: ∘ a first memory element (111, 211, 311) of the first control device configured for: - recording within the first control device data relating to the intensity of the electric current to be supplied to the first light sources; ∘ a first memory element of the second control device configured for: - recording within the second control device data relating to the intensity of the electric current to be supplied to the second light sources; ∘ data receiving means (112, 212, 312; 322) of the first control device configured to receive said data from an external device, and ∘ data processing means (113, 213, 313) of the first control device having: - within the first control device, write access to the first memory element (111, 211, 311), configured to write data received by the data receiving means into the first memory element of the first control device; ∘ data processing means of the second control device having: - within the second control device, write access to the first memory element, configured to write data received by the data receiving means into the first memory element of the second control device; characterized in that the first control device further comprises a second memory element comprising the data defining the intensity of the electric current to be supplied to the second light sources, intended to be powered by the second control device. ∘ a first memory element (111, 211, 311) of the first control device configured for: - recording within the first control device data relating to the intensity of the electric current to be supplied to the first light sources; - recording within the first control device data relating to the intensity of the electric current to be supplied to the first light sources; ∘ a first memory element of the second control device configured for: - recording within the second control device data relating to the intensity of the electric current to be supplied to the second light sources; - recording within the second control device data relating to the intensity of the electric current to be supplied to the second light sources; ∘ data receiving means (112, 212, 312; 322) of the first control device configured to receive said data from an external device, and ∘ data processing means (113, 213, 313) of the first control device having: - within the first control device, write access to the first memory element (111, 211, 311), configured to write data received by the data receiving means into the first memory element of the first control device; - within the first control device, write access to the first memory element (111, 211, 311), configured to write data received by the data receiving means into the first memory element of the first control device; ∘ data processing means of the second control device having: - within the second control device, write access to the first memory element, configured to write data received by the data receiving means into the first memory element of the second control device; - within the second control device, write access to the first memory element, configured to write data received by the data receiving means into the first memory element of the second control device;