I have a 1980 f150 no cruise control the horn was taken out along with some other wires when the previous owner switched to the duraspark 2 ignition and I cant figure out which wire from the column goes to the horn its non tilt

 

Yellow/lightblue is power coming into the column. Darkblue is leaving the column to feed the horn. It's a simple switch, no relay.

 

Alright thank you