An interior rearview mirror assembly for a vehicle includes a casing having a human machine interface thereat. In one embodiment, a full-wave rectifier circuit is coupled to the utility grid through an isolation transformer and circuit protector. Each closed-loop coil is positioned so as to make an interlinkage with the magnetic field leakage that escapes from the deflection yoke, a part of the closed-loop coil running almost in parallel to the top or bottom edge of an effective display region of a front panel. A group of pixels on the image formation device that correspond to a portion of the virtual negative image is illuminated. Also, the CAM may quickly add one or more new entries into the memory by consuming substantially less amount of time while updating the entries. The handle is coupled to the body and configured for grasping by an individual’s hand to promote insertion and removal of the test paddle from the relay.