The NMWP 4M connector is available with the keying slots next to the latch, or on the opposite side from the latch(this version). These will
come with the terminal lock, terminals and wire seals, unassembled. A pigtail option is available for $5. This option will include 24" leads,
with the wire seals and terminals already attached. Available wire colors are black, white, red, orange, yellow, green, blue.
The mating connector is also available here
The standard seal included is the blue seal which will work for most 18 or 20 gauge wire.
To find the proper seals for your application, check here
DSM 1990: radiator fan,
DSM 1991-1994: radiator fan
DSM 1995-1996: radiator fan
DSM 1997-1999: radiator fan