ok in the end what i have done is cut the cable to half (dont ask why LOL), connected Ground and 3 other cables (white, red, black), the green one connected throw switch, and it works fine, one strange thing the happening is: if the fuze in the dock when i back from sinc mode to charging only and push some button, the light of the screen turn of, but if i go to britness setting it back again, am I missing something?
here some images of the final result:




my old zen touch BTW..i like Fuze SQ much more, btw original Fuze earphones not so bed after all (not bad for bundle) .