2021 ZX-6R Bench Flash Harness - Couple of Questions

in ZX 636
The bench harness for the 2021 ZX-6R has two ECU connectors. One has a black backing plate with 4 wires installed; the other has a grey backing plate with one black (ground?) wire installed.
I assume that both of these must be connected while writing to the ECU, and that they are connected to the correspondingly colored connector on the ECU: black backing plate to black ECU connector, grey backing plate to grey ECU connector.
Correct?
Also: When beginning the write process, do I begin with the flash harness connectors connected to the ECU, or not?
Thank you.
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