Patent ID: 7126488

Claim:
A method for installing a cartridge light housing having a blown fuse indicator light therein into a pre-existing fuse housing comprising the method steps of: a. grasping the fuse housing of a prior art fuse; b. cutting and forming an elongated horizontal aperture within said fuse housing; c. grasping said cartridge light housing; d. positioning said cartridge light housing into an install position, by aligning said cartridge light housing with said elongated horizontal aperture; e. inserting or frictionally snapping said cartridge light housing into said elongated horizontal aperture; and; f. installing prior art fuse ( 10 ) with cartridge type light housing ( 34 ) within an electrical circuit in the typical manner; whereby: when a circuit overload has occurred and the prior art fuse is no longer functional, said cartridge light housing automatically illuminates and visually notifies a user that said prior art fuse needs to be replaced.