The requirements contained within this document for the Interior Lighting Subsystem include functions, performance, appearance, design constraints, reliability, and validation. Interior Lighting Subsystems consist of, but are not limited to, reading, overhead courtesy, vanity, glovebox, footwell, ashtray, door entry/exit, floor console compartment, ashtray, trunk, cargo, underhood, and ambient lighting assemblies.

Certain sections or paragraphs are broad in scope as this document must cover many different types of Interior Lighting Subsystems which vary in content, function, location, and design that must satisfy the specific needs of a vehicle program. The Interior Lighting Subsystem shall also comply with the program specific Vehicle Technical Specifications (VTS) when developing the Interior Lighting Subsystem.

In designing the Interior Lighting Subsystem, the Interior Lighting Supplier is expected to work cooperatively with the Interior Center and/or the Responsible Platform(s) and any other component supplier(s) in resolving any interface, design or functional issues. The Interior Lighting Subsystem Leadership Team will be the final arbitrator of any vehicle or subsystem level Interior Lighting requirement. In the case of GMDAT designed components, all interior lighting issues must be addressed by the GMDAT Electrical Council.