Phat or slim, not sure if there is a difference. I'm a slim modder.
The cable is a ZIF cable (Zero Insertation Force) and only has connections on one side..
(TOP DOWN VIEW INSERTED IN CONNECTOR) If they follow normal guidlines positive should be on the right with a ground immediately next to it and NEGATIVE should be on the left most likely with a ground next to it.
That is best guess though.... Though Sony likes to F things up just for the fun of it...
###############NOTE#################
Don't use electrical tape it conducts electricity!!!!
Use kevlar tape, you'll have to order it online.. just google it...
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-yngmike