Abstract: A one-piece electrical connector for connecting an insulated conductor to a generally cylindrical conductive terminal post includes a first connector portion formed as an open-ended cylindrical shell segment of about the same axial length as the terminal post and having an inner circumference to snugly completely encircle the terminal post. The shell has a sidewall deformation intermediate the segment ends for retaining the connector on the post. A second connector portion grips the insulated conductor piercing the insulation and making electrical contact with the conductor.