Question for procede owners (or people knowledgable with ECU wiring/piggy uninstalling)

So, i'm uninstalling the procede from my harness, because i don't actually want it, it just happened to come with...

so there's the red, blue, yellow, green wire harness things.. now, one of them has a GREY connector, which is meant to mate to the FACTORY grey connector

is this the CAR side of the wiring, not the ECU? as i don't actually have a grey coloured connector present, only the black/black/white ones, as i just have the wiring that comes off the engine into the plugs and the ECU, nothing from anything into the cars CAN stuff

thanks for any help :)