Just found this through another source this morning. This is what jw is pointing to:
This is one more fine example of why electrical safety is so important and you really need to understand what you are doing.
Faulty Instructions Prompt Recall of Electrical Wiring How-to-Books by The Taunton Press; Shock Hazard to Consumers
WASHINGTON, D.C. - The U.S. Consumer Product Safety Commission, in cooperation with the firm named below, today announced a voluntary recall of the following consumer product. Consumers should stop using recalled products immediately unless otherwise instructed.