yeah the centre pin is the one that sends signals back to the chip
the bottom pin will be grounded any ground will do
but the top pin is the positive anolog line..... u cant use any positive supply.... it will need to be the 1.5v anolog line...... its easilly traceable.... i've traced it for the left anolog but not the right.... but both anologs and triggers run off the same + trace.... so either link to one of the trigger pins or the left anolog pin or just follow the trace to a nice spot that u can tap into....
heres a pic of the traces for the left anolog they may help..... i just havnt got round to doing the right yet......
you dont need all 10 of the wires for it ... (on a cg pad)
you need 1 for x axis
1 for y axis
1 for the click of the anolog
1 brigdeing the constant 1.5+V
and one brdgeing all the grounds ... heres a pic to show ya what i mean.
(click here for full size image)(click here for full size image)thats how i do my left anolog moves.... u can do something very similar for the right....