Abstract: This specification discloses a connector adaptor for electrical interconnection with a diagnostic connector in an automobile. The connector adaptor permits easy access to and labeling of a diagnostic connector which can include, for example, an aligned row of recessed terminals. The connector adaptor includes a panel supporting a plurality of generally L-shaped conductive strips each having a terminal section and a generally perpendicular leg section. The leg sections are of different lengths so that the terminal sections can be spaced along the panel surface sufficiently far apart to permit easy access. Identification for each of the terminal sections can also be provided on the panel surface.