Hi David,
Here's a link to a download for the Miata 1991 wiring diagram
http://www.madracki.com/miata/wiring.html
Helped me out big time when I stripped my loom.
Cars really coming on now. It's a nice feeling when you can bolt stuff in and leave it there.......
Keep up the good work and keep the piccy's coming....
Johno
ps....... I also have a PDF workshop manual for the 1990 if it's of any help''''