A kit for making a device with a branched electric network, suitable for being integrated into a textile article, such as a garment, the kit having several modules, including: - several electrical energy consuming elements (2, 2', 2", 2"', 2"", 3) or, alternatively, several electrical energy generating elements - an electrical energy source, - a monitoring device (4, 4'), intended to be connected to said electrical energy source comprising a microcontroller, at least capable of controlling stopping or starting the electrical energy consuming elements (2, 2', 2", 2"', 2"", 3), or alternatively capable of regulating the recharging of the electrical energy source from the electrical energy collected by said electrical energy generating elements, and - several flexible branched wired connection systems, each comprising a two-pole connector portion called upstream connector, electrically linked in parallel to at least two other connector portions, called downstream connectors (6 2, 6 3), each with two poles, the different electrical modules (2, 2', 2", 2''', 2''', 3, 4, 5) being physically independent, each comprising at least one two-pole connector portion, the electrical connector portions of the electrical modules being physically configured to allow the assembly of a branched electrical network, resulting at least from the use of several branched wired connection systems, said branched electrical network allowing electrically linking, in parallel, the electrical energy source / monitoring device (4; 4') assembly, on the one hand, at the top of the tree, and at least several of the electrical energy consuming elements (2, 2', 2", 3), or alternatively several electrical energy generating elements, on the other hand, at the bottom of the tree, characterised in that the upstream connector portion, on the one hand, and the at least two downstream connector portions (6 2, 6 3), on the other hand, of said branched wired connection systems are then respectively a male portion and two female portions, or conversely, one female portion and two male portions, the branched wired connection systems being configured to be combinable by direct connection of the upstream connector portion of a branched wired connection system to a downstream connector portion (6 2, 6 3) of another branched wired connection system. - several electrical energy consuming elements (2, 2', 2", 2"', 2"", 3) or, alternatively, several electrical energy generating elements - an electrical energy source, - a monitoring device (4, 4'), intended to be connected to said electrical energy source comprising a microcontroller, at least capable of controlling stopping or starting the electrical energy consuming elements (2, 2', 2", 2"', 2"", 3), or alternatively capable of regulating the recharging of the electrical energy source from the electrical energy collected by said electrical energy generating elements, and - several flexible branched wired connection systems, each comprising a two-pole connector portion called upstream connector, electrically linked in parallel to at least two other connector portions, called downstream connectors (6 2, 6 3), each with two poles, the different electrical modules (2, 2', 2", 2''', 2''', 3, 4, 5) being physically independent, each comprising at least one two-pole connector portion,