An electrical junction assembly (10; 100) for coupling one or more branch wires (18; 118) to a main trunk line, said junction assembly (10; 100) comprising: an electrically insulative housing (16; 116) defining an internal cavity, said housing having a pair of trunk line openings (22, 24; 122; 124) and at least one branch opening (28; 128), all of said openings communicating directly with said cavity; a first trunk wire (30; 130) having an electrically conductive core strand surrounded by an insulating jacket, and a first trunk terminal (34; 134) affixed to said core strand thereof, said first trunk terminal (34; 134) extending into said cavity through said one (22; 122) of said trunk line openings (22, 24; 122; 124); a second trunk wire (32; 132) having an electrically conductive core strand surrounded by an insulating jacket, and a second trunk terminal (36; 136) affixed to said core strand thereof, said second trunk terminal (36; 136) extending into said cavity through the other (24; 124) of said trunk line openings (22, 24; 122; 124) and directly interlocking with said first trunk terminal (34; 134) in said cavity; a branch wire (18; 118) having an electrically conductive core strand surrounded by an insulating jacket, and a branch terminal (48; 148) affixed to said core strand thereof, said branch terminal (48; 148) extending into said cavity through said at least one branch opening and directly interlocking with at least one of said first and second trunk terminals (34; 36; 134, 136) in said cavity; the electrical junction assembly (10; 100) being characterized in that - said first and second trunk terminals (34; 36; 134, 136) comprise respective female and male interlocking fittings, wherein - the male fitting further comprises at least one aperture adapted to cooperate with at least one hook (40, 140) formed inside the housing (16, 116) in such a way as to lock the male fitting inside the housing, - the male fitting further comprises at least one further aperture adapted to cooperate with the branch terminal (48, 50) to provide an electrical connection with the branch terminal (48, 50) and to hold the branch terminal (48, 50) in place; - the male fitting further comprises a laterally extending barb adapted to cooperate with apertures in the female interlocking fitting in such a way as to lock the female and male fittings together when the female fitting is introduced into the junction housing via its trunk line opening (22, 24; 122; 124). an electrically insulative housing (16; 116) defining an internal cavity, said housing having a pair of trunk line openings (22, 24; 122; 124) and at least one branch opening (28; 128), all of said openings communicating directly with said cavity; a first trunk wire (30; 130) having an electrically conductive core strand surrounded by an insulating jacket, and a first trunk terminal (34; 134) affixed to said core strand thereof, said first trunk terminal (34; 134) extending into said cavity through said one (22; 122) of said trunk line openings (22, 24; 122; 124); a second trunk wire (32; 132) having an electrically conductive core strand surrounded by an insulating jacket, and a second trunk terminal (36; 136) affixed to said core strand thereof, said second trunk terminal (36; 136) extending into said cavity through the other (24; 124) of said trunk line openings (22, 24; 122; 124) and directly interlocking with said first trunk terminal (34; 134) in said cavity; a branch wire (18; 118) having an electrically conductive core strand surrounded by an insulating jacket, and a branch terminal (48; 148) affixed to said core strand thereof, said branch terminal (48; 148) extending into said cavity through said at least one branch opening and directly interlocking with at least one of said first and second trunk terminals (34; 36; 134, 136) in said cavity; - said first and second trunk terminals (34; 36; 134, 136) comprise respective female and male interlocking fittings, wherein - the male fitting further comprises at least one aperture adapted to cooperate with at least one hook (40, 140) formed inside the housing (16, 116) in such a way as to lock the male fitting inside the housing, - the male fitting further comprises at least one further aperture adapted to cooperate with the branch terminal (48, 50) to provide an electrical connection with the branch terminal (48, 50) and to hold the branch terminal (48, 50) in place; - the male fitting further comprises a laterally extending barb adapted to cooperate with apertures in the female interlocking fitting in such a way as to lock the female and male fittings together when the female fitting is introduced into the junction housing via its trunk line opening (22, 24; 122; 124).