2003 vw vert. I replaced rear passenger brake light......well, don't know how, but I can't find the wing nut that holds the light in place. It's like a big black plastic wing nut.... I can't locate one. Any suggestions?????
First retrace all the steps you took when you took it off. Is it in the space between the panel and the light someplace?
Lowes has an area in hardware that has nuts and bolts etc that may fit. They are usually in those rolling drawers along one aisle.
If you have a woodcraft store in your area they carry all kinds of wingnuts and knobs for using on jigs and such.
Use a regualr washer and nut that fits to hold it on. The wingnuts are for ease of assembly.
Your tail lights are p/n 1C0 945 171 D (left) or 1C0 945 172 D (right). As I suspected, my parts diagrams do not show the fastener (in your case a wingnut) or the size. They are not actually parts with VW part numbers, but the Dealer's exploded views list the fastener by description and size. They carry these in bulk for their service department.
You have my suggestion as to an outside source in the p/m I sent you, but with the part-outs that are going on around here, I would think one of them could fix you right up. Send them a p/m and ask! They probably won't see YOUR post.
Doesn't include pics, which could be a problem at times, but it lets you do part number searches and its a lot of little bits. Not the best shipping times depending on the part (they will order stuff from Germany sometimes I believe) but if you need little parts like this, it can be useful. I'm sure there are other places too.