Product Overview SureLight® Ignition Control Replacement Kit This kit contains all components required to replace any existing single-stage SureLight® ignition control in a Lennox gas furnace. Replacement Ignition Control Replacement Ignitor Ignitor Mounting Brackets Wiring Harness (9-pin to 12-pin) Wiring Harness (4-pin to 6-pin) Ignitor Harness Adapter Diagnostic Sticker Wiring Diagram Screws, Wire Nuts, Wire