Modding Psone Screen

PSone screens already have tact controls at the bottom.

If you want to relocate them, take the tacts off and wire them to their original position.
no. only two. tacts are redundant. you only need two wires. just check with a multimeter. ;)
If you don't care about having extra wires, then just solder all four corners on each side. At least it'll work.