751107 Replacement Bulb

This Jims In-Line Spark Tester is a dedicated diagnostic tool designed to provide an immediate visual confirmation of ignition performance. It bridges the gap between the spark plug and the ignition wire, making it easy to identify weak or intermittent spark issues that cause poor engine performance. Suitable for use on various Harley-Davidson ignition setups, including electronic and distributorless systems, it eliminates guesswork during the troubleshooting process. Jims is renowned for producing specialized American-made tools that meet the specific needs of V-twin mechanics. This tool is a practical solution for quickly isolating electrical faults in a workshop or garage setting.