A lighting module for the passenger compartment of a motor vehicle includes a housing and light-emitting means arranged in the housing and able to emit a lighting light beam having a wavelength selectively chosen from at least two distinct predetermined wavelengths. Electronic control means for controlling the light-emitting means are arranged to control the emission of the lighting beam with the chosen wavelength. Also included are support for electrical interconnection carrying the light-emitting means and the control means and interconnecting same, electrical connection means for electrical connection of the light-emitting means and/or the electronic control means to the outside of the housing, and optical interface means for guiding the lighting beam outside of the housing.