First you need to know what type of controller you have; viewtopic.php?f=22&t=1161
Then you need instructions; viewtopic.php?f=22&t=1162
These instructions are detailed enough, you just need to know how to solder.
You will have to buy 30awg wire.... and the 3.5mm jack and tac buttons are easy just look at the pic for which points on the pcb and what letters on the chip to solder the leads to.
make sure you remove the shielding on the pcb solder points so they look like a new penny. Use Flux... non acidic. and a clean Iron. GL.