Jump Start Points in the 2007 R320 CDI

[Gregory]

My owners manual has drawings of under the hood, showing where the points are for attaching jumper cables.

Its clear where the positive terminal is, its under a red plastic cover, and is a brass fitting when uncovered.

The negative terminal spot is more elusive. I just don't see anything at the place where the drawing indicates. There is a bolt and nut sticking up from the body work. There is also the hinge bolt for the hood strut.

Right there in the area is a black fuse box with a lot of wires, but I sure don't see anything that looks like the place to clamp the negative jumper cable.