Knock Sensor Extension Wiring Harness LS1/LS6 to LS2 Conversion Adapter This harness plugs in place of the factory LS1/LS6 knock sensor harness and extends to the knock sensor locations on an LS2 engine block. These knock sensor connectors are single wire and are not compatible with dual wire knock sensors. Fitment LS2 engine with LS1/LS6 wiring harness Harness plugs in place of the factory LS1/LS6 knock sensor harness and extends to the knock sensor locations on the LS2 engine block. Works on single wire knock sensors only. Will NOT work on knock sensors that require a two wire connection. Qty 1 harness