7-Position Micro-One Receptacle Housing — What You're Actually Ordering
The Molex 2059792071 is a 7-circuit receptacle housing from the Micro-One 205979 series, built for wire-to-board or wire-to-wire signal interconnects at a 2.00mm pitch. The black PA nylon insulator carries an Independent Secondary Lock (ISL), which is a terminal position assurance (TPA) feature: after the crimped contacts are inserted, the ISL slides over them to lock each terminal in its cavity. That extra retention step matters in harnesses that see vibration or field service, where a backed-out pin means a dead circuit.
The single most common mistake with this order code is assuming the housing arrives with terminals. It does not — the note explicitly states Contacts Not Included. The 2.00mm pitch and single-row layout mean the terminal cavities are spaced tightly, so the correct crimp tooling and wire gauge (typically 20-24 AWG for this series, though the exact range should be confirmed from the terminal datasheet) are needed for a reliable assembly. The ISL feature only works if the terminals are fully seated before the lock is engaged — a partial insertion that feels seated but is not locked will pass a continuity check and fail under vibration.