What This Housing Is and What It Needs
The Molex 3191 series 0019091099 is a 9-position, 3-row receptacle housing with a 0.264" (6.71mm) pitch and matching row spacing. It is a free-hanging (in-line) housing designed for crimp termination — the contacts are ordered separately.
Contacts Are a Separate Line Item
The housing accepts either male or female crimp contacts, but none are included — the listing explicitly notes "Contacts Not Included". When ordering, add the matching Molex 3191-series crimp terminals to the BOM.
Mating Half and Retention
This receptacle housing mates with the corresponding 3191-series plug housing (male pin header) of the same 9-position, 3-row, 6.71mm pitch layout. The latch lock provides audible and tactile feedback when fully seated — in a harness assembly, that latch is the primary vibration-proofing mechanism. No secondary locking device is listed, so the latch alone carries the retention load.