Patent ID: 7733659

Claim:
A method of ordered assembly of discrete components of an automotive audio system comprising the steps of: providing a closure member, an audio player subassembly, a circuit board subassembly and a housing case, each with respective cooperating integral engagement features including axially extending guide surfaces, said closure member forming a generally planar front face; positioning the front face of said closure member on a work surface in an inverted position to define an assembly axis extending generally normally from said work surface; and serially applying the audio player subassembly, circuit board subassembly and housing case along said assembly axis to previously assembled components, whereby said respective engagement features register and self-engage said components in fixed juxtaposition, and whereby said closure member effects fixtureless self-support of said audio player subassembly, circuit board subassembly and housing case during said assembly process in at least two offset directional axes disposed parallel to the front face of the closure member.