Indoor light fitting bracket support for firmly tightening an insulated electric cable (C), said bracket comprising: a) a first body comprising a front face , a rear wall , a first side wall having a first upper part and a first lower part , said first upper part projecting from said first lower part , a second side wall having a second upper part and a second lower part , said second upper part projecting from said second lower part , b) a second body comprising a front face , a rear wall , a first side wall having a first upper part and a first lower part , said first upper part projecting from said first lower part , a second side wall having a second upper part and a second lower part , said second upper part projecting from said second lower part , c) the rear wall of the first body and the rear wall of the second body each comprising at least one vertical slot (12A; 12B) over their entire height and said slots (12A; 12B) facing one another and being adapted to firmly tighten an insulated electric cable (C), d) the rear wall of the first body facing the rear wall of the second body , said rear wall of the first body being firmly fixed against said rear wall of the second body by a fastening means (16A; 16B) passing through each of the said rear walls, characterised in that e) the upper central part of said first and second bodies (2; 7) each comprise a depression (13A; 13B), and in that f) a passage adapted for a fastening means passes vertically through the first upper part projecting from each of the first and second bodies, and in that g) a passage adapted for a fastening means passes vertically through the second upper part projecting from each of the first and second bodies. a) a first body comprising a front face , a rear wall , a first side wall having a first upper part and a first lower part , said first upper part projecting from said first lower part , a second side wall having a second upper part and a second lower part , said second upper part projecting from said second lower part , b) a second body comprising a front face , a rear wall , a first side wall having a first upper part and a first lower part , said first upper part projecting from said first lower part , a second side wall having a second upper part and a second lower part , said second upper part projecting from said second lower part , c) the rear wall of the first body and the rear wall of the second body each comprising at least one vertical slot (12A; 12B) over their entire height and said slots (12A; 12B) facing one another and being adapted to firmly tighten an insulated electric cable (C), d) the rear wall of the first body facing the rear wall of the second body , said rear wall of the first body being firmly fixed against said rear wall of the second body by a fastening means (16A; 16B) passing through each of the said rear walls, characterised in that e) the upper central part of said first and second bodies (2; 7) each comprise a depression (13A; 13B), and in that f) a passage adapted for a fastening means passes vertically through the first upper part projecting from each of the first and second bodies, and in that g) a passage adapted for a fastening means passes vertically through the second upper part projecting from each of the first and second bodies. <EOS>