IN THE XBOX CONTROLLER S
I installed a Subminiature Pushbutton SPST switch on my Controller S. One of the legs of the switch is soldered to a white wire, which is soldered to the contact point of the controller's yellow wire. The other leg of the switch is soldered to a black wire that is soldered onto the contact point of the controller's thicker black wire ( labeled as black wire contact on 2nd pic) for a ground.
Is this correct so far?
IN THE XBOX ITSELF
I cut the yellow wire coming from controller port 2 and soldered a Y wire (labeled as "3 way solder" <--in yellow). Two of the legs of the Y were the severed pieces of the yellow wire. Though they all look black, 2 of the black wires are soldered directly to the severed yellow controller port ends and thus essentially act as the yellow wire). The third black wire in this 3 way solder is soldered to what i thought was the wire that needed to be grounded from the front power switchboard. This wire is by A4 and is noted by two red arrows. It is also the very bottom yellow wire connecting to the front switch board or far right wire if you are orienting the front power switch board as depicted in the picture above (sorry some of the pic is cut off). All of this of course did not work and is most likely due to miscommunication. So here are the pics so we can all be on the same page.
I would greatly appreciate it if someone could guide me or at least tell me what i've done so far that is correct. Thanks.