3-Position Grace Inertia Plug Housing — the Latch-Lock Fit for Harness Duty
The listing note is clear: contacts not included. This housing requires a separate order of the matching Grace Inertia female crimp terminals (TE part family 1971793-series contacts) and the correct wire gauge per the terminal specification. Confirm the header's position count matches this 3-position housing — the keying geometry prevents mismating with different position counts in the same series.
At 2.50 mm pitch, this housing gives a tighter centreline than the 6.35 mm or 9.50 mm options in the same Grace Inertia family — the 6-position 1-1376477-6 runs the same pitch but doubles the circuit count. The latch lock is the same mechanism across the Grace Inertia series, so the mating header's lock ramp is identical regardless of position count. The blue colour is a visual key for the 3-position variant — the red 6-position 1-1376477-6 uses the same latch but a different cavity count, so the colour helps identify the housing on the harness board.
No official second-source cross-reference exists for this exact TE order code.