I like the large technical sheet that WPC-era games have stapled inside the cab. Showing the fuses, solenoid lists, switch and lamp matrix details all together.
I took an example WPC one which I found (thanks to Martin Reynolds and Peter Koch) and made one for my F-14 Tomcat.
Feel free to use it if you want, or suggest corrections / changes. I've been over it a couple of times and fixed a couple of things, I think it's OK now.
[May 2014 - just noticed I can upload files to pinside now, so attaching here in case something happens with my S3 store!]