What kind of groud have you guys been suing. First I used the bolt where the rstb would go but that wasn't good, and now I'm using the one next to where the jack is and that one sucks too. What is everyone using?

 

On each side at the back of the trunk under the liner there are two bolts that hold the bumper to the frame. I grounded mine there.

 

I used the bolts that hold the trunk latch. There is also a spot along the front of the trunk(closest to the bumper) that has a factory ground. I used that bolt as well. I had 4 grounds right in that area, and they all worked without issue.

 

Rear left and right side the trunk widens a bit. Drill straight through and you can hit the frame. That is a good ground. Use the largest brass bolt you can find.