I recently got myself a Hori Fighting Commander 3, thanks to the recommendations by shoryuken forum users.
The pad is great, but I wanted to change the 5th and 6th face buttons from R1/R2 to L1/L2.
I ended up opening it and figured out what I’d need to do. It took me a while, but I figured it out and thought I’d post my findings/tutorial here to give something back for the recommendation you gave me.
Some soldering is required, but it’s not too hard to do if you have at least some experience. I’m not pro at all, so the soldering job might not be pretty, but it get’s the job done
Here you can see how the Face Buttons are connected to Shoulder/Trigger.
S/T connects by the wide and flat grey wire and FBs just simply connects to the same wiring.
You need to cut the original “wires”, marked by red X. To do this, use something sharp and carefully scrape it until there is a gap in the wire.
Next you need to scrape some of that green protective stuff (see how professional I am?) off the wires, so you can actually solder to them.
Run the wires accross the board and solder them to L1 and L2.
L1 is the middle one, marked on the board as 2
L2 is the left one, marked on the board as 1