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Side Marker Light

Lamps installed in all vehicles sold in United States since 1969 that permit the vehicle to be seen when entering a roadway from the side and to provide a means for other drivers to determine vehicle length (clearance).

Side Molding

The trim on the sides of a vehicle that offer protection or to improve the appearance.

Side Oiler

A Ford big block V-8 having a main oil gallery relocated on the low left side of the block.

Side Shift

A steering-column mounted transmission gear-shift lever.

Side Step

The act of slipping one's foot on the clutch pedal suddenly while revving the engine in drag racing.

Side Valve

An engine having intake and exhaust valves in the block beside the cylinders.

Side-dash Components

The installation of heating and air-conditioning components that have the evaporator mounted on the curb side of the firewall in the engine compartment and the heater core in the duct in the passenger compartment.

Side-draft Carburetor

A carburetor having one or more horizontal barrels.

Side-mount Battery

A battery having terminals on the side.

Sidewall

The side of a tire between the bead and the tread.

Sidewall Information

Certain information required by the Department of Transportation to be imprinted on each tire, such as size, load rating/inflation pressure maximums, generic name of each cord material in the sidewalls and tread areas, actual number of plies in the sidewall and tread area, the words tubeless or tube type, as applicable, the word radial, if applicable, and the manufacturing code to determine who the tire, where it was made, and when it was made.

Sidewinder

A vehicle having an engine that is mounted transversely.

Sight Glass

A glass window in the liquid line or top of the receiver-drier used to observe the liquid refrigerant flow in an air conditioning system.

SIGMA

An acronym for Society of Independent Gasoline Marketers of America.

Signal

In electronics, the information contained in electrical quantities of voltage or current that forms the input, timing, or output of a device, circuit, or system.

Signal Generator

A test instrument for generating standard signals, used to analyze circuit performance.

Signal Integrity

The accurate reconstruction of a signal, determined by the systems and performance considerations of an oscilloscope, in addition to the probe used to acquire the signal.

Signal Source

A test device used to inject a signal into a circuit input, The circuit output is then read by an oscilloscope.

Signature Voltage Signal

A waveform characteristic that makes it possible to distinguish from other, similar waveforms. Caused by the circuits unique configurations or ware patterns.

Significant New Alternatives Policy (SNAP)

A rule established in 1994, under Section 612 of the 1990 Clean Air Act (CAA) to initiate a program in which the Environmental Protection Agency (EPA) is to evaluate applications for use of substitute chemical and technology designated to replace ozone depleters in specific uses, including flammability, chemical toxicity, global-warming potential, exposure of workers, consumers, the general public, and aquatic life.