Please note that the SGGCX2PRO must be updated to the latest firmware in order for the SGX2HW to work (visit the support section of the Street Guardian website to download the latest firmware), once updated you will need to set “Power Input” to “3-wire”. The SGX2HW is not compatible with the SG9663DC, or any other camera. Comes with ATO add-a-circuit and 5Amp fuses (2pcs each). You will receive: 1pcs – SGGCX2HW Hardwire 2pcs – ATO add-a-circuit + 2pcs 5A Fuse blades Install the SGX2HW to enable a special parking mode on the Street Guardian SGGCX2PRO Dash Camera System. The SGX2HW Hardwire Kit also includes build-in low-voltage cut-off so that the camera will turn off before draining the vehicle’s battery.