P38 Circuit Board HARMAN P38 CONTROL BOARD RETRO-KIT Please ensure you require this control board prior to ordering. We are unable to return circuit boards that have been installed or used in anyway. Be sure to check all wiring and components prior to installing a new control board. We are happy to assist with technical support. Part Numbers: ~ 1-00-03769 / 1-00-7738111 Control Board Kit Includes Mounting Plate, Board, Wire Harness, and Room Sensing Probe. *Enjoy built-in thermostat control with this new circuit board kit