Tool Aid 23970 In-Line Spark Checker Kit for Recessed Plug<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Troubleshoot virtually all domestic and imported cars， SUVs and trucks</li><li>Flashing bulb indicates ignition or fuel delivery problems</li><li>Frequency and intensity of flash indicates whether there is an ignition system problem or fault in the fuel delivery system</li><li>Safety orange color for easy visibility</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41xr6ttx7wL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51SyK%2B%2BkmpL.jpg" noproxy>