Can’t get these connections in to sit?

[TurbineT]

Can’t seem to get the connections in ? They just keep coming loose, can’t seem to push them in either far enough ? Any ideas ?
https://pasteboard.co/JwSCDiT.jpg

https://pasteboard.co/JwSD4nmx.jpg

 

[James]

There is a small metal prong that clicks into the plastic as you push them in, make sure it is bent out a little before pushing into plastic holder.

 

[Lucien Nunes]

Or, if that's not the solution, we need more info. Did you just crimp the contacts and want to insert them into the housing for the first time? If so, then sometimes the crimp tool can distort the contact so that it simply will not fit correctly, perhaps because the crimp die is not correct for the contact or was slightly out of position.