They are in the regular fuse box... if you have the diagram of the fuse box under the fuse box lid then they are easy to find... also, if they are visually broken then that makes them easy to find also... if you don’t have the diagram I can see about getting a pic for you. I believe they are the blue ones (but don’t hold me to that). Also it is a good idea (if you haven’t already done so) to change all fuses in the fuse panel. Made my 300E run a little smoother... some of my fuses were so old. My fog light fuse blew after running them for only a few days. And the fuses are only like 25 to 30 cents each.