Abstract: An update kit allows the conversion of a suction throttling valve of a vehicle air conditioning circuit, from a mechanically operated switch to an electrically actuated thermostatic switch, without destroying the authenticity of the air conditioning circuit. The kit includes a substantially rigid planar plate for coupling in the suction throttling valve in place of a diaphragm, a gasket for coupling adjacent to the planar rigid plate to prevent leakage of refrigerant, a thermostatic electrical switch having a flexible elongated temperature probe from coupling to the vehicle adjacent to the evaporator with the flexible elongated temperature probe in contact with the evaporator, a faster means for securing the elongated temperature probe in place, thermically insulating tape for wrapping around the flexible elongated temperature probe, and a conductor means for electrically coupling the thermostatic electrical switch to the clutch cycling system of the vehicle.