Saturn RJ45 cable help

Since I can’t seem to find any Saturn RJ45 cables, I decided to make them myself. I ordered Saturn controller extension cables, but I can’t find a pin diagram anywhere. Can anyone help me out on this? Also, any tricks for making a clean looking cable? TIA!

do you mean a pin diagram for the RJ45 cable? if so this guide has it. RJ-45 Multi Console Cthulhu Arcade Stick Tutorial Ver.2

you’ll need to use a multimeter to figure out which wire goes to which pin.