The 18 circuits match the BOM line count for a 3x6 arrangement; if your harness needs 21 positions, the sibling 1-967630-5 (yellow housing, same pitch and row spacing) is a direct swap in the same series.
Housing Color and Keying
The green housing of the 1-967629-3 serves as a visual key in multi-connector harness assemblies — the same 18-position layout is also available in yellow (1-967629-4). Colour differentiation prevents mis-mating on the line when several identical-position plugs sit in the same harness bundle.
The housing accepts the matching Junior Power Timer receptacle (sold separately) and uses a primary latch for audible lock confirmation.
