Wii stick mod

Howdy, amateur modder, wanting to see if anyone knew the plausibility of routing a Madcatz Fightpad for Xbox 360 through a TvC arcade stick control panel. In this way, there would be two cables for consoles. My initial thoughts were that if I connected the 5v to the 3.3v spot on the TvC control panel that it would allow me to utilize it for the home button on the Xbox controller as well, however I’m either wrong or have just done a shoddy soldering job. Is this feasible or not so much? Thanks ahead of time. Didn’t find a ton of overtly helpful information on any of the other threads involving this scenario.

First, study this: Dual modding 101