The connectors are AMP Universal Mate-N-Lock.
They are carried by Mouser:
Pin housing P/N 571-14807020 (My old cat price is $0.32) --- 1
needed
Pins are P/N 571-3505501 (old price is $0.09) --- 4
needed
I suggest you check the configuration and numbers to be sure you get the
appropriate "gender".
73,
Rick
VE7ASR