My lightsaber finally has sound. I had a friend worked on it while I watch where he connected every wire to the right and wrong places.
I did found a diagram that really helped us out.
Saber parts I brought with ultrasabers are pommel, batteries with speaker and v4 soundboard. In my saber that's gonna have the sound we kept the original LEDs, trimmed the wire but keep the resister connected with the black wire just by removing them from the switch. I use a small flat screwdriver to remove the glue off the switch plug. For the battery pack for the stunt I trimmed a little bit off and keep it for backup. Since, I'm not gonna have flash on clash until I fix the inside to make it look nice and organize in there. Just make sure you have plenty of room to take out the soundboard along with the battery pack cause I didn't. Once I do ended up fixing it again, I will send a photo of the wiring and maybe a video in the future since there's none I tried looking.