BK, grab the whole wiring from the donor car. That will make it SOOOOO much easier to install in your car. If you snip the wires you will have to splice into the car's computer wire, and the power wires. If you take the whole wiring kit, you will just simply have to plug into your fuse box and it will work. Alot easier, and safer if you get the whole thing. I know I wouldn't want to clip the car's computer wire if I didn't have to! Good luck.