Lamp for a light for wall and/or ceiling mounting, - with at least one circuit board that carries several LEDs, - with a circuit board support that is configured as a straight profile, that carries the respective circuit board on an upper side and that has, on a lower side, support-side attachment means for attachment of the lamp on or in the respective light as well as electrical connection means for electrically contacting the lamp with a power supply of the respective light, - with a cover that is configured as a straight profile, that allows through light of the LEDs, that is attached to the circuit board support and that delimits at the upper side of the circuit board support a cavity in which is arranged the respective circuit board with the LEDs, characterized in that - the electrical connection means have at least two lamp-side electrical contacts that are electrically connected via at least two conductors with circuit board-side electrical contacts, that, for their part, are electrically connected via conductive tracks of the respective circuit board with the LEDs, - that at least one end cap is pushed on a longitudinal end of the circuit board carrier and the cover, - that at least one such end cap has cap-side electrical contacts that, when pushed on, electrically contact the circuit board-side electrical contacts and that are electrically connected with the electrical conductors, - that at least one plug part is attached by the support-side attachment means to the circuit board support and that, when mounting the lamp on a light housing of a light, is insertable into a socket part fixed to the light housing so as to make a mechanical and electrical contact - with at least one circuit board that carries several LEDs, - with a circuit board support that is configured as a straight profile, that carries the respective circuit board on an upper side and that has, on a lower side, support-side attachment means for attachment of the lamp on or in the respective light as well as electrical connection means for electrically contacting the lamp with a power supply of the respective light, - with a cover that is configured as a straight profile, that allows through light of the LEDs, that is attached to the circuit board support and that delimits at the upper side of the circuit board support a cavity in which is arranged the respective circuit board with the LEDs, - the electrical connection means have at least two lamp-side electrical contacts that are electrically connected via at least two conductors with circuit board-side electrical contacts, that, for their part, are electrically connected via conductive tracks of the respective circuit board with the LEDs, - that at least one end cap is pushed on a longitudinal end of the circuit board carrier and the cover, - that at least one such end cap has cap-side electrical contacts that, when pushed on, electrically contact the circuit board-side electrical contacts and that are electrically connected with the electrical conductors, - that at least one plug part is attached by the support-side attachment means to the circuit board support and that, when mounting the lamp on a light housing of a light, is insertable into a socket part fixed to the light housing so as to make a mechanical and electrical contact