Check the listing for details. Vintage Sears Clamp On Inductive Timing Light 28-21684 Box Instructions USA. Condition: Used. Listed at 29.95 USD. This vintage Sears Clamp On Inductive Timing Light is a must-have for any automotive enthusiast. The light comes with its original box, instructions, and leads, making it a complete package. It is a great addition to any diagnostic service tool collection and is perfect for those who love to tinker with their cars. The timing light is made in the United States and has a manufacturer part number of 28 21684. It features inductive technology and is designed to help measure the timing of engine parts. This product is perfect for anyone who wants to learn about their car's timing and how to adjust it. It looks to have been used maybe once. The Items are described as accurately as possible. Please examine the attached pictures carefully, as they are part of the description and condition. Always check your tracking for arrival date.