The housing itself carries no contacts — the note on this part is clear: contacts are not included. You will need to source the matching male crimp terminals separately to populate the 12 cavities across two rows. The housing is moulded from glass-filled PBT, a material that holds its dimensional stability under the -40°C to 80°C operating range typical of underhood and industrial cabinet environments. The dual-row layout keeps the connector footprint compact for a 12-way circuit count, and the free-hanging (in-line) mounting suits harness assemblies where the plug floats relative to the panel or mating header.
For the wiring side, the housing accepts crimp terminals (male pin contacts) that are inserted into the rear cavities and retained by the housing's internal lance. A terminal position assurance (TPA) retainer is typically used in this series to lock the contacts in place against vibration. The Micro Quadlok series supports a range of wire sizes; the specific terminal cross-section determines the current rating per circuit.