Carlin 99017S Test Jack and Spark Plug Kit

The Carlin 99017S Test Jack & Spark Plug Kit will provide ignition testing and electrical connection capability within burner control assemblies. It operates through a test jack interface that allows circuit evaluation and a spark plug component that transfers ignition voltage for combustion startup operation. Positioned within ignition and burner sections where electrical testing access and spark generation are required during operating sequences in HVAC systems. Its configured connection structure maintains stable voltage transfer and supports accurate ignition circuit evaluation. Accurate ignition testing is a standard part of seasonal servicing and fault diagnosis, particularly in oil furnaces and boilers of the system.