Thanks again for the help, SLK World Forum! I received the DEPO LED Tail Light Assemblies yesterday and installed them tonight. The assemblies definitely look modern compared to the OEM Assemblies. It's nice not to see the annoying brake lamp warning light anymore!
I paid $255.25 for the assemblies (including tax and shipping/handling) and saved about $344.75 from the estimated $600 I would have paid to the dealership. The passenger side brake assembly still works fine, so I will probably sell it.
I'll admit that it took me about 3 hours to get the job done because the assemblies did not come with instructions and the only diy replacements I've personally done include trunk struts and some air freshners. If I had to do it again, it would easily be about 30 minutes. Here are some of the lessons I learned:
(1) You only have to remove the single side panels and the CD changer in the trunk to access the assemblies. There's no need to remove more because the three 8mm nuts you need to unscrew are visible and are relatively easy to get to.
(2) The DEPO assembly has two (2) metal caps that look like the ends of a cell phone car charger that I thought connected to something in car. Eventually figured out those metal caps are suppose to go in the old bulb sockets that I put into the new assemblies. They're probably there to prevent the warning light from coming on in the dash.
(3) While fastening the DEPO assembly, be sure to push with moderate pressure on the assembly from the outside to close the gap at the seams. I initially didn't think the assembly fit because there was a 1/2 inch gap. The extra push closed the space to about 1/4 inch.
(4) try not to drop or lose those screws and rivets. Magnets are helpful. I may buy a few of those plastic/vinyl rivets/retainers as I lost a couple in the process. http://www.amazon.com/Mercedes-Benz-...sh+type+rivets
One comment about the DEPO assembly seems to be the two footlong black plastic pieces that come with the assemblies. The prongs/guides on them appear to be cheap and don't stay on. They easily slips off if you pick at them. I am trying to get these replaced or I may just glue them to the assembly.
Overall, the tail lights look great and it was a good learning experience that saved me a few bills.