Electrical connection device comprising a first part and a second part, the first part comprising a first support and at least one electrical conductor (11A, 11B), which is engaged and held by a first end (111A, 111B) in the first support, the first support of the first part being configured to be engaged with a first connector of a first electrical equipment, so as to ensure an electrical contact between said first electrical equipment and the at least one electrical conductor (11A, 11B), the second part comprising a second support configured to be engaged with a second connector of a second electrical equipment, so as to ensure an electrical contact between said second electrical equipment and the at least one electrical conductor (11A, 11B), the first support of the first part comprising at least one first housing for receiving and holding the at least one electrical conductor (11A, 11B) by the respective first end (111A, 111B), and the second support of the second part comprising at least one second housing (21A, 21B) for receiving and holding the at least one electrical conductor (11A, 11B) by a respective second end (112A, 112B), characterized in that the second end (112A, 112B) of the at least one electrical conductor (11A, 11B) is configured to be held by snap-fastening in the second support, in that said second end (112A, 112B) has a first protuberance (1A, 1B) extending from an edge of the electrical conductor (11A, 11B), said first protuberance (1A, 1B) being configured to be folded against a face of the at least one electrical conductor (11A, 11B), the first protuberance (1A, 1B) comprising an opening configured to receive a fastening lug so as to fasten said at least one electrical conductor (11A, 11B) by snap-fastening in the second support, and in that said electrical connection device moreover comprises a leg integrally formed with the first support, said leg being configured to guide and allow the assembly of the first support of the first part of the electrical connection device with the second support of the second part. the first part comprising a first support and at least one electrical conductor (11A, 11B), which is engaged and held by a first end (111A, 111B) in the first support, the first support of the first part being configured to be engaged with a first connector of a first electrical equipment, so as to ensure an electrical contact between said first electrical equipment and the at least one electrical conductor (11A, 11B), the second part comprising a second support configured to be engaged with a second connector of a second electrical equipment, so as to ensure an electrical contact between said second electrical equipment and the at least one electrical conductor (11A, 11B), the first support of the first part comprising at least one first housing for receiving and holding the at least one electrical conductor (11A, 11B) by the respective first end (111A, 111B), and the second support of the second part comprising at least one second housing (21A, 21B) for receiving and holding the at least one electrical conductor (11A, 11B) by a respective second end (112A, 112B), characterized in that the second end (112A, 112B) of the at least one electrical conductor (11A, 11B) is configured to be held by snap-fastening in the second support, in that said second end (112A, 112B) has a first protuberance (1A, 1B) extending from an edge of the electrical conductor (11A, 11B), said first protuberance (1A, 1B) being configured to be folded against a face of the at least one electrical conductor (11A, 11B), the first protuberance (1A, 1B) comprising an opening configured to receive a fastening lug so as to fasten said at least one electrical conductor (11A, 11B) by snap-fastening in the second support, and in that said electrical connection device moreover comprises a leg integrally formed with the first support, said leg being configured to guide and allow the assembly of the first support of the first part of the electrical connection device with the second support of the second part.