the score line 70 resides within a portion of the thickness of the exterior surface 72 extending from the upper web portion 54 to the distal base portion 52 of the housing 120 the central throughbore 56 extends therethrough however unlike the previous embodiments of the housing subassemblies this embodiment 120 comprises a flap 124 that is designed to break away when a force is applied to the left and right wings 76 78 furthermore the housing subassembly 120 comprises a series of raised ridges 126 residing within the left and right wings 76 78 these ridges 126 are designed to add strength and rigidity to the wings 76 78 in an embodiment the flap 124 is connected between the opposing left and right wings 76 78 of the housing subassembly 120 such as by molding more specifically as shown in fig8 the flap 124 is positioned and connected between respective left and right sides 122 a 122 b of the upper housing portion 54 each flap 124 resides within a corresponding notch 128 within the sidewall 58 of the housing upper portion 54 of the housing subassembly 120 in an embodiment each flap 124 may be composed of a rigid polymeric material that easily breaks under a mechanical stress in addition the flap 124 may be composed of santoprene silicone polyether block amides and the like when a force is applied to the opposing left and right wings 76 78 the flap 124 breaks off of the left and right side 122 a 122 b of the upper housing portion 54 thereby exposing the notch 64 positioned within the sidewall 58 of the housing body 122 thus when the flap 124 breaks off the notch.