If I want to add a circuit, what's a good ground point to use near the fuse box on the driver's side? The only points it looks like I could use are bolts for the steering column, and that seems like a bad idea.... I don't want to screw something else up just to add a power jack for my phone in the Euro parcel shelf. I haven't looked behind any of the trim yet. Any advice? Any photos?

 

There are several factory earth points behind the sills

 

I used the one of the bolts under the knee bolster. Worked well.

 

On my Cooper I used one of the three bolts that is part of the triangular plate that the steering column goes through.

On the S, I'd love to use the same bolt, I just can't seem to loosen the dang thing...

 

Pull the knee bolster down, look under the left-most airvent - there's a screw that's grounded. Nice easy access you need to get to it...