A carrier of one or more light sources for a lighting and/or signaling module especially for an automotive vehicle, comprising: a substrate having at least one aperture and electrical tracks on at least one side; and at least one light-emitting diode (LED) having a body and electrical connection leads lateral to the body. The LED or at least one of the LEDs is placed through a respective aperture of the substrate, and the connection leads make contact with respective electrical tracks. The substrate is a rigid molded part having a three-dimensional shape possibly providing an optical function such as that of a reflector. In this case, the LEDs are directly supported by the optical part.