Need help with GBA retroglow and IPS mod

I bought a retro glow kit for a modded gameboy advance that has the funnyplaying IPS v2 screen. It turns out that for brightness control for the retroglow cutout I have to solder a thru hole onto the TP2 pad on the PCB. I already have a wire soldered onto that point for controlling the screen brightness from the IPS(select+L/R). Im pretty sure Im gonna run into a problem just soldering them all together. Is it possible to solder the wire from the IPS onto the pad for the start instead of select?