The Molex MX123 Connection System User Manual provides product overview, assembly, mating, service, and cleaning instructions.
This manual introduces the sealed MX123 Connection System, describing its header/controller, mating connectors, and terminal options such as 80‑Ckt 0.64 mm terminals and 73‑Ckt 2.8 mm terminals. It highlights keying options, ground‑blade engagement, blind‑mate compatibility, and temporary retention features.
Detailed sections cover harness assembly, connector mating, service procedures, electrical continuity checking, tool ordering, and cleaning guidelines, including warnings against water exposure and step‑by‑step cleaning steps.
| Circuit option 1 | 80‑Ckt 0.64 mm terminals |
|---|---|
| Circuit option 2 | 73‑Ckt 0.64 mm and 2.8 mm terminals |
| Lever release force | over 190 N |
| Wire grip code A | 22 GA |
| Wire grip code B | 18/20 GA |
The lever will not release unless a force over 190 N is applied; otherwise the connector must not be used.
Do not apply water to the ECM assembly; clean with a damp (not dripping) paper towel or rag and use high‑pressure air to dry.
The system offers multiple keying options and the ground blade engages before the signal pins contact, supporting blind‑mate conditions.