A light guide member (100, 200, 300, 400) for a power device (10) includes a ring-shaped body (34) adapted to be disposed within a housing (22) of the power device (10). The ring-shaped body (34) has an outer surface (63) that is contoured to complement an inner surface (50) of the housing (22), and includes a light receiving surface (44, 46) and a light emitting surface (48). The ring-shaped body (34) further includes a light coupling portion (42) adapted to accommodate a light source (30, 32) and configured to direct light emitted by the light source (30, 32) to the light receiving surface (44, 46). Light received by the light receiving surface (44, 46) propagates through the ring-shaped body (34) via internal reflection to the light emitting surface (48) where the light is directed out of the light guide member and uniformly illuminates a portion (53) of an outer surface (52) of the housing (22) of the power device (10).