Welcome to FT mate.
May I toss in another option for you. It sounds like you have to put the connectors on from the start. I would suggest that you if possible depending on what you are putting them in, direct solder the two. I say this for several reasons. First you already have to do solder work. Second plug in connections can be an added place for problems to occur. I know having a break away connection in the case of air craft can be a good idea but electrically it is just adding another weak link.
Barring that the advise from the two kind gents above are correct and proper as always.