The TE Connectivity 1-1969603-6 is a 16-circuit, 2-row receptacle housing from the VAL-U-LOK series, on a 4.20mm pitch.
This housing accepts VAL-U-LOK female crimp socket contacts (not included — order separately). The crimp termination lets you build custom-length harnesses with the wire gauge that fits your load. For a 16-circuit harness, you'll need 16 sockets plus the header on the board side.
What the 4.20mm Pitch and Latch Lock Mean for Your Build
The 4.20mm pitch gives enough room between contacts for 600V-rated creepage in a compact package — it's the standard spacing for mid-current wire-to-board interconnects in the VAL-U-LOK family. The latch lock is the main retention feature: it resists vibration loosening better than a friction-only fit, which matters in a harness that runs along a moving assembly or inside a vehicle. The free-hanging design means you route the wires to the housing, then mate it to a board-mounted header — no panel cutout needed.