Oh right it's in the title, I thought I saw it somewhere. The grounds are at the front right near the bottom of the engine (when standing at the front of the car) and another is about a foot from the battery under the fuse box. It's a bit hard to get to, but is do-able. Also just take the wires going to the battery, and see if you can move them side to side while they're still hooked up. You shouldn't be able to. The engine ground nut is a 15mm. The battery ground is smaller, I can't remember what it is for sure.