Yes, IM sorry for the slow reply. I figured it out shortly after posting but didnt come back and discuss, oops. It was a very dumb mistake by me. I had pulled an alternate fuse to use as a replacement for my D+ fuse that I blew out hooking too big of a load to it. I pulled the windshield wiper fuse, yes the wiper fuse, to use as my replacement D+ fuse. I think they are around 10 to 15A. All was good I thought until it rains. Somehow I didnt correlate this to the turn signals going out. Proabaly because it had happened with some time separation as the van sits for long periods as I build it. ANYwayyyy, the wiper and the turn signal circuits power up together somehow using the same fuses, IDK at all, makes no sense to me and I know German cars, BMW's namely, inside and out. Someone more knowledgeable on the Mercedes wizardry... witchcraft, not sure witch, behind that wiring business, maybe can comment.