Abstract: The present invention provides an assembly for displaying a sign, including a sign frame and one or more lights disposed on the frame, with each light including one or more electrical conductors for conducting electric current thereto from an electric power source. The display assembly includes an electrical conductor associated with the frame and connectable to the electric power source, a light socket interconnectable with the frame and having a socket opening for receiving the light inserted therein, a connector interconnectable with the light socket and having at least one electrical conductor disposed for electrical contact with the electrical conductor on the light when the light is inserted into the light socket and the light socket is interconnected with the conductor. The electrical conductor on the connector is interconnectable in electrical contact with the electrical conductor on the frame in order to establish electrical communication between the light and the electric power source.

Abstract: The temperature controller employs a single thermistor temperature sensor providing an analog signal indicative of engine system temperature. The analog signal is compared with a plurality of separate threshold temperatures to produce a multiplicity of separate temperature signals representing different temperature ranges across the operating temperature spectrum of the engine system. These separate temperature signals are processed through digital logic gating circuitry to provide sequentially occurring outputs on parallel output leads. The sequentially occurring outputs sequentially activate different heat dissipating mechanisms within the engine system to maintain a substantially constant temperature.