A lamp fixation system for fixing an electric lamp in a reflector housing in an efficient and effective way. The lamp is positioned in a predetermined position to ensure a reliable electrical power supply. The predetermined position is effected via a cap of the electric lamp which is clamped in a hole in the reflector housing. The cap is provided with spring means for pushing against a surface at the inner wall of the hole in the reflector housing. The spring means comprises a first electrical contact for abutting against an electrical contact in the surface to ensure reliable electric power.