Josh49 thanks for the valuable suggestions ! I did this install yesterday in about 45 minutes.
I did not want to tap the wires in the light assembly like others were doing, as wiring to the fuse box is a far better option and reversible if there is ever any question of modifications vs. warrantee. The only thing that was unclear from your posts was where you attached the ground in the area of the fuse box. I spent a lot of time looking for a good candidate existing screw in the fuse box area, without finding a good option. I finally just drilled a hole in the metal support bar that runs in front of the fuse box (the one the wire bundle is attached to) and used a bolt and nut with some locktite to hold the eyelet.
I should have taken pictures for
325ie90. This is a REALLY simple installation and is very clean. The hardest part was working within the confines of the fuse box (I'm a pretty big guy - and upside down under dashboards has never been easy for me). If I have a chance tonight, I'll take a few pics and post them here to help everybody out.