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Interior Lights

The inside vehicle-lighting system, including courtesy, dome, map and instrument- panel lights.

Interlock

An electrical-circuit arrangement that prevents a second operation from taking place until the first operation is completed.

Intermediate Gear

A small torque increase obtained from a planetary gear set when the sun gear is held and power is applied to the internal gear.

Intermediate Lever

Part of the parking brake linkage under the vehicle that increases application force and work with the equalizer to apply it equally to each wheel.

Intermittent

A fault that occurs now and then in an electrical circuit, referring to occasional opens, shorts, or grounds.

Intermittent Duty

A service requirement that demands electrical or mechanical operation for alternate intervals of load and no load; load and rest; or load, no load, and rest.

Intermittent Problem

A fault that occurs now and then in an electrical circuit, referring to occasional opens, shorts, or grounds.

Internal Gear

A gear with teeth pointing inward toward the center of the orifice.

Internal-combustion Engine (IC)

An engine that burns the air/fuel mixture in a chamber inside the engine cylinder, like a conventional reciprocating engine or a rotary engine.

International Carwash Association/National Carwash Association

A trade association consisting of carwash owners, operators, manufacturers, distributors, and suppliers.

International Franchise Association

A trade association representing franchisors, franchisees, suppliers, educational institutions, and franchise associations from other countries.

International Hot Rod Association (IHRA)

A drag-racing sanctioning body.

International Karting Federation (IKF)

A major kart-race sanctioning body.

International Motor Contest Association (IMCA)

An automobile race-sanctioning body of drivers, owners, and mechanics created to establish rules, regulations, and specifications.

International Motor Sports Association (IMSA)

A road-racing sanctioning body.

International Race Of Champions (IROC)

An annual series for top drivers from various forms of oval-track and road racing who are invited to compete, driving identical spec cars.

International Show Car Association (ISCA)

A promoter of International Championship Custom Car Shows.

International Truck Parts Association (ITPA)

A trade association of companies that buy and sell used and remanufactured heavy-duty truck parts.

Internet

A global network connecting billions of computers accessible at no charge.

Internet Explorer

A Microsoft web browser; enables you to view web pages.