Panel mount connector with terminal module secured to connector housing

A panel mount connector for mounting in an aperture of a panel, comprising:

• a housing with an outer surface and a lip on a front side of the housing, the lip extending beyond the outer surface, the housing having a rear side opposite the front side and defining a channel that extends from the front side to the rear side;
• a terminal module that is inserted into the channel from the rear side, the terminal module supporting a plurality of terminals;
• and
• a secondary piece that secures the terminal module to the housing, wherein the secondary piece is a locking post that is inserted into a plurality of housing apertures that are positioned near the rear side, the plurality of housing apertures being aligned in a side-to-side direction that is transverse to the channel which extends front side to rear side, the locking post being inserted into the plurality of housing apertures in the side-to-side direction, the locking post, when inserted, having a blocking portion that blocks removal of the terminal module from the channel, wherein the blocking portion of the locking post is positioned transverse to the channel and wherein the locking post includes a release tab that is configured to be deflected by a user in operation and the release tab secures the locking post in the housing.