switch installation heLp for pu-18

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im trying to make backups of my games and need help remodifying my psx

scph:5501
mod chip: four wired
dont know which particular chip i have, let a buddy install it years ago..
the wire orientaion goes as followed

pin 1 - red
pin 5 - yellow (i think my buddy swapped this and green, no big deal jess wire eh.)
pin 6 - green
pin 8 - black

i just wanted to verify whether pin1-switch-main board would work properly to aid in lockouts