A mounting clip for retaining a cable against a mounting surface includes a mounting flange configured to be mounted to a mounting structure, a first cable retainer, and a second cable retainer. The first cable retainer extends from the mounting flange and defines a first passage configured to receive a length of a cable therethrough. The second cable retainer extends from the mounting flange and defines a second passage configured to receive the length of cable therethrough. The second cable retainer is resiliently movable between a rest position and a loaded position. In the rest position, the second cable retainer extends into the first passage and defines the second passage smaller than the first passage. In the loaded position, the second cable retainer is moved in a direction away from the mounting structure by the length of the cable received in the first passage and is configured to apply a force to an outer surface of the length of the cable to hold the length of the cable against the mounting structure.