I did it this morning. Not too difficult, thanks to Willy's pictures. On the 87 300e the 8mm hexnut is a little lower & was easily removed with a hand driver, & I decided to avoid the butter knives & go for the firewall 10mm. I replaced the relay since it was only another 8mm, which was accessible. Dropped the 10mm once, but was lucky enough to get it out, then I packed paper towel into the ratchet socket & topped with 2-sided scotch tape to hold the screw while I inserted the extension. Worked like a charm, & now I have light. Thanks again Willy & Kamal.