RON816 For those who haven't seen this yet, I've reproduced the workshop manual wiring in colour for us older chaps with crappy eyesight. Currently working on the same for SP3.
KevB I really like what you have done - it also reminds me a little of the London Tube map. I reckon you could abstract that down a little and it would make a really nice T-shirt/hoodie print... If you do it, count me in :-) Cheers, Kev.