I THINK the missing relay is the rear window defroster, but what plugs into that weird looking plug all the way to the left? It might be nothing, but every time I look at my car I find something wrong with it... Less and less now, but I want to get it right if it's something I need to fix. Click to view attachment

rear window defroster relay

I thought that's what that was, but what is the weird little plug to the left of the fuses?

The plug for the rear window defroster. I believe the left most fuse is for it, too.

There is a relay and a wiring harness connection for the rear defog.

Thanks! I was worried it was somrthing important!

Plug that in...never have rust again!
(nobody ever plugs it in)

I dont have a rear window defroster...

....it's in the rear window.....(has to be correct!)