Just put it in yesterday on my '02 beak. Only 4 oem parts were needed:
1. 61137671355 Bracket
2. 61137671354 Terminal Screw
3. 61137672395 Protection Cap
4. 07119931050 Flat Washer
Less than $20 for all.
First remove the plastic starter cover, replace the brass stopper on the starter upper terminal with the Bracket, align and bore a hole on the plastic starter cover to accomodate the terminal plug and re-install it, then install the Terminal plug, Washer, and Protection cap on the bracket. That's all!
My 02 didn't have the provision for it on the cylinder head, so I just use that big bolthead sticking out near the bottom of the engine. Works just fine
Of course, YMMV, blah blah blah, yadda yadda yadda...
A good zero resistance jumper cable ground is important. You can't have the jumper cable's clamp sputtering thru a painted or fuzzy cad plated surface. The electronics don't like it (the sputtering/arcing). The BMW negative lug also has a clamp retention groove so it won't slip off and arc like crazy. I was under the impression that the same threaded hole (for the Negative Lug) or one like it nearby, also exists on our 2002 models. Anyone that's done this add-on know for sure?