An installation kit which consists of a tester, i.e. a voltage indicator from 100 to 250V, which has a neon signaling diode, a steel, flat tip and a pin insulated along the entire length. In addition, the set includes a terminal strip made of plastic, which allows easy separation of the tracks with a knife, as well as a flame retardant self-adhesive insulating tape for use as an insulator for electrical connections.