I'm ready to pick a Molex KK 254 header, housing and crimp combination.
@Pars I'm going to take you advice and get the crimp tool you suggested and @Newmarket I'm following your advice where you mentioned you use the housing with polarising ribs. So far I have decided on these parts
Header
View attachment 120597
https://www.molex.com/en-us/products/part-detail/22272021
Housing
View attachment 120598
https://www.molex.com/en-us/products/part-detail/22013027
However for the crimp I see a lot of options, see the "mates with" sections here https://www.molex.com/en-us/products/part-detail/22013027#mates-with-use-with
I think not getting the reel is the best option before I will have to cut each one, but in terms of the other options I really don't have a clue. Can someone recommend a sensible option?
I use 08-50-0032
https://uk.farnell.com/molex/08-50-0032/contact-socket-22awg-crimp/dp/2424111
Note that the Farnell page says 24 - 30 AWG but the datasheet has 22 - 39 AWG
Might be interested in this on the tooling aspect:
https://spellfoundry.com/2013/04/06/a-comparison-of-molex-kk-0-1-crimp-tools/