The single most egregious DIY artwork I've seen is Reader's Digest's [ISBN 0-89577-378-3] -- pages 252 & 253:
Repeatedly the switch-leg in Romex is color-banded white.
Illustration #2 shows Romex leaving the box as TWO neutrals, one banded, and popping out as black, white, bare-ground!
This banded-switch-leg notion appears in many other DIY efforts, too. I just don't have them ready-to-hand.
If errors this glaring populate the electricity section one can only fear for those trusting the foundations and framing instructions.
The book is advertised by one on-line retailer as, "The most complete and authoritative home repair manual ever published, this book is the yard-stick by which all other books on do-it-yourself are measured. The definitive guide to home repair, maintenance, and improvement. Over 4,000 illustrations."
Well, I'm reassured.
