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I am working on an approval for a wire harness purchased as an assembly. What are the PPAP requirements for the components (connectors, terminals, wire, tape, tubing) within the harness. I am being told that a signed PSW for each of these is not enough for the approval. Note, the wire harness supplier has submitted performance testing for the entire harness from an accredited lab. I have been arguing this with the plant for days that the wire harness supplier is responsible for their suppliers and that the PSW is evidence that the PPAP process was followed and approved for the sub componets in the assembly we purchase. Before I get in more trouble what are the requirements for purchased assemblies and where is it stated? I worked with parts from a supplier that submitted to an assembly and I never heard of submitting level 3 PPAP for each of the sub supplier's components. The PSW were always enough. Thank you.