contact it will be appreciated however that while the present lamp 12 is inserted radially into the housing the lamp 12 may be inserted axially into the housing 14 as desired by rotating the lamp 12 about the longitudinal axis l in any direction such as for example in the direction of the arrow a fig9 the power terminals 23 27 override the resilient bias of the contacts 22 26 allowing the power terminals 23 27 to rotate about and be guided by the flanges 32 34 once fully rotated fig1 a and 10b the power terminals 23 27 push the resilient terminals 24 26 to the side against their bias and as a result the power terminals 23 27 are retained and an electrical contact is produced the lamp 12 is now ready to operate it can be seen in the above illustrations that throughout the installation process and as held in the operating position the ground contact is first to be created and is maintained throughout to withdraw the lamp 12 the process is repeated and the lamp is rotated again in any direction about its longitudinal axis l to align the terminals 23 25 27 in the insertion slot 30 as a result the power terminals 23 27 once again are disconnected from the contacts 22 26 while the ground connection is maintained between the ground terminal 25 and the ground contact 24 in other words the ground connection is the last to be broken once fully rotated the lamp 12 can be withdrawn from the lampholder 10.