Hello,
The ground wire bolts to the side of the engine block unlike most vehicles. You will need to disconnect the battery and remove it. After that you will need to remove the battery tray. Once these steps are complete you need to look towards the engine above the shift linkage to the trans and you will find a wire bolted to the block with a 10mm bolt. This ground wire comes from the factory wrapped in wire loom and is a little booger to get out of the factory loom. You may want to just wrap your new ground cable with loom and cable tie it to the existing harness and then snip the old ground cable below the battery terminal clamp. Hope this helps.
