something you can do to trouble shoot the wire is take a multimeter and your controller open up the controller hold one of the pins on the gcc port
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make sure you are only in contact with one pin on the multimeter then on the circut board test each socket that the cable plugs into there should be 6 while testing each port you should hear 1 beep per gcc port socket if you hear to then you have some wires crossed if you dont hear 1 then you have a weak connection or cut cable