yes can buy bare bones molex but for less than $4.00
each with wires already attached (the 2 headed ones off Amazon)
i decided why bother
for the little plastic latching piece, if it is a prob for you, experiment
by making one from a PSupply donation, leave some extra
length on the wires, cut the latch off with small flush-cut
wire snippers and just use the extra length on the wires to
kinda squish it in to the battery compartment enough to
just hold the connector in place.. without the latch they are not loose
and they should stay connected reliably
i find some of those connector latches a pain too.. always
snipped them off Cat6 ethernet cables at least on the side
plugged into the back of a computer..