on my 66 i have what i think is a 72 SS steering wheel, with no horn working from the wheel. i do have two new horns mounted an working on a push button switch under the dash. i'm going to pull this wheel an install an original 66 wheel an horn ring. the old horn wire is still by the new horns an going to the horn relay. at this point i hope it is still complete thru the fire wall an to the connector at the steering column. at this point i'm lost as to how the 12v. gets to the base of the cancel cam for the horn blow contact. i have the wiring chart from classic car wiring.com but it stops at the connector at the column base. i also have the factory assembly manual, which isn't the clearest of pictures. so if anyone can give any info or pictures or tips it would sure help.