A method of providing electrical connection to electrically-powered LED stripes (S 1,......, S n) having at least one electrical contact pad at one face of the stripe, the method including: - arranging on said mounting surface at least two said LED stripes (S k, S k+1), each with at least one respective electrical contact pad facing away from the mounting surface, and - adhesively applying at least one electrically-conductive line onto said mounting surface having said at least two LED stripes (S k, S k+1) arranged thereon, with said at least one electrically-conductive line extending between respective electrical contact pads of said at least two LED stripes (S k, S k+1) by providing electrical connection between said respective electrical contact pads and said at least one electrically-conductive line, wherein the method includes: - arranging said at least one electrically-conductive line on a ribbon-like, electrically non-conductive substrate, - adhesively applying said electrically non-conductive substrate onto said mounting surface having said at least two LED stripes (S k) arranged thereon, and - i) setting said electrically non-conductive substrate between said at least one electrically-conductive line and each of said at least two LED stripes (S k) and providing in said electrically non-conductive substrate at least one opening providing a passageway for electrical connection between said at least one electrically-conductive line and at least one respective electrical contact pad in each of said at least two LED stripes (S k), or - ii) setting said at least one electrically-conductive line between said electrically non-conductive substrate and each of said at least two LED stripes (S k) and providing between said at least one electrically-conductive line and each of said at least two LED stripes (S k) an electrically non-conductive cover having at least one opening therein providing a passageway for electrical connection between said at least one electrically-conductive line and said at least one respective electrical contact pad in each of said at least two LED stripes. - arranging on said mounting surface at least two said LED stripes (S k, S k+1), each with at least one respective electrical contact pad facing away from the mounting surface, and - adhesively applying at least one electrically-conductive line onto said mounting surface having said at least two LED stripes (S k, S k+1) arranged thereon, with said at least one electrically-conductive line extending between respective electrical contact pads of said at least two LED stripes (S k, S k+1) by providing electrical connection between said respective electrical contact pads and said at least one electrically-conductive line, - arranging said at least one electrically-conductive line on a ribbon-like, electrically non-conductive substrate, - adhesively applying said electrically non-conductive substrate onto said mounting surface having said at least two LED stripes (S k) arranged thereon, and - i) setting said electrically non-conductive substrate between said at least one electrically-conductive line and each of said at least two LED stripes (S k) and providing in said electrically non-conductive substrate at least one opening providing a passageway for electrical connection between said at least one electrically-conductive line and at least one respective electrical contact pad in each of said at least two LED stripes (S k), or - ii) setting said at least one electrically-conductive line between said electrically non-conductive substrate and each of said at least two LED stripes (S k) and providing between said at least one electrically-conductive line and each of said at least two LED stripes (S k) an electrically non-conductive cover having at least one opening therein providing a passageway for electrical connection between said at least one electrically-conductive line and said at least one respective electrical contact pad in each of said at least two LED stripes.