Attaching the new ribbon cable to the ringer switch is a challenge. First of all its difficult to remove the old ribbon cable from the bracket that holds the ringer switch. I had to break away the 3 plastic studs that hold them together and then find something pointy like the sim removal tool to punch the old plastic anchors out of the bracket. When you connect the new ribbon cable to the bracket, you'll notice that it is not entirely secure to the bracket. I used liquid nails to glue it on very carefully. Others have used a sodering iron to melt the studs in place. It going to require something to keep the ribbon secured to the cable. Otherwise the switch will work its way out from the bracket and your silence feature will not work. One last technique is to place the battery right up against the cable to provide extra support.