An electronic part equipped unit includes a case body that includes a first recess portion for containing an electronic part and a second recess portion for containing a relay terminal which is connected to the electronic part, a wire side terminal to which a middle portion of a wire is attached, and a cover member to which the wire side terminal is attached. The wire side terminal is brought into contact with the relay terminal when the cover member to which the wire side terminal is attached is fitted to the second recess portion of the case body. A positioning rib for restricting the relay terminal is provided on a bottom portion of the second recess portion of the cover body. The wire side terminal has a rib contact portion. A projection amount of the positioning rib is set so that the rib contact portion is brought into contact with the positioning rib when the cover member is fitted to the second recess portion of the case body in a state that the wire side terminal is not completely attached to the cover member.