Electric circuit tester connector for highway vehicles

Claim 1

A test connector for testing electrical circuits of highway tractor and trailer vehicles, comprising: a body having a hollow interior portion; a first transverse bulkhead extending across said body and being electrically non-conductive; a plurality of contacts mounted in said first transverse bulkhead for making electrical connection with such electrical circuits; a plurality of electric lamps each provided with a pair of terminals and being supported by said body such that illumination of each lamp is visible so as to provide visual indications of voltage being applied to an associated electrical circuit; means respectively coupled between said contacts and one of the terminals of said electric lamps for electrically connecting the same with the respectively associated contacts; an electrically conductive hook; and means electrically connecting said hook to the other terminal of each of said electric lamps; said hook connected with said body having a portion thereof extending from said body for supporting said test connector and for making an electrical ground connection between each of said electric lamps and one of said vehicles, whereby a plurality of complete test connector circuits connecting such electrical circuits of a vehicle to the ground thereof can be provided through said contacts, said means coupled between said contacts and corresponding electric lamps, said electric lamps, said means electrically connecting said hook and electric lamps, and said hook.