Have an 82 Venture with wiring that looks okay; however, all three fuses were rusted in sockets, but I get them. Can't read fuse size, don’t know what the holes to the left of fuses are for, generally confused on the set-up.Traler...Need proof of trailer weight for WA state licensing (it’s not on title). I.D. plate on trailer unreadable. Can’t find a website to verify it either. Any ideas? Thanks, Tribb