ucd180 hxr & smps 1200a180 question

hi
i am in the middle of building a 5ch hypex ucd180 amp with the hypex smps 1200a180 psu. i am confused about the thin wire which i think is stated as pin 1 on/off on the manual, do all 5 cables from ucd180 modules go to j 4.6 on the psu?

i have pretty much done all the wiring but i am confused about this bit.

thanks