did you do this?
You do not need to use the plug, you could just run Pos and Neg wires directly to your PDB
I think he used the JST for either testing or to make it easily removable with out having yo de-solder it. But he did not show soldering the
jst from the pdb.. which i think added a bit of confusion and also if thats what he ended up doing
Ive also read that you only need to use the pos form the kk to the PDB