The Molex 5046940402 is a 4-position, single-row plug housing from the CP-3.3 504694 series. It is a free-hanging (in-line) connector meant for wire-to-board or wire-to-wire harness applications where you crimp terminals onto individual wires and insert them into the housing. The latch lock provides a positive retention click when mated to the corresponding header; you should hear it seat.
Key Specs That Drive the Fit
Contacts are not included with this housing — you order the crimp terminals separately. The contact type is male pin, terminated by crimp, so the build sequence is: strip the wire, crimp the terminal, insert into the rear of the housing until the latch clicks. Single-row layout with 4 positions means the harness is a compact inline bundle. The latch lock fastening type is vibration-resistant; if it backs out, it's scrap, so confirm the terminal fully seats.
Mating and Termination Checklist
This plug mates with the matching CP-3.3 header (same 0.130" / 3.30mm pitch, same series). The latch lock on the plug engages the ramp on the header shroud — you should feel and hear the click. Termination is crimp-style: use the Molex crimp terminal specified for the CP-3.3 series and your wire gauge. The housing is keyed so the terminal can only go in one way; a backwards or loose terminal will not lock and will push back out under vibration.