A wiring harness with a number of electrical wires, each constructed and arranged to carry electrical signals, and each having a length. There is also a security cable that is not constructed and arranged to carry electrical signals. The security cable has a length that is less than the length of any of the electrical wires, and has a greater tensile strength than that of any of the electrical wires. The electrical wires and the security cable are bonded together over only a portion of their respective lengths into a reinforced multi-wire cable assembly, while over another portion of their respective lengths the electrical wires and the security cable are separate from one another.