I checked my Haynes, and all it has is an exploded view of what looks to be a 69-70 horn/wheel
I found this in one of my catalogs, Hope it helps,
J
__________________
____________
'66 Mustang Coupe- AKA "Lenore" *on disability for a (long) bit*
'93 GT Mostly stock AKA "Fawkes"
Rice Haters Club Member #239
"I find your lack of faith...disturbing."
"Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats." H. L. Mencken