A 1914 Canadian Ford Manual.
It seems that Mr Ford had changed his mind the following year/model!!
Mr Ford was certainly a fascinating character
Though the magneto was indeed revised for more power at #572,437 in september 1914 - thicker magnets and oval coils. So he may have had the magneto lights in mind but couldn't recommend them for customers until the cars with a more powerful magneto were at the dealers.
http://www.mtfca.com/encyclo/I-O.htm#mag1