on my original harness that was used to convert to 12v. the wire coming from the steering box hooked to a wire on the main harness right where it came out of the box. then the horns themselves had a separate harness of their own. one of the wires on this harness connected to the battery positive and the other to a wire in the main part of the harness near the starter/firewall area.
the rest of the wiring on the other end of the separate horn harness connected to the relay that was mounted to the horns.
I have no idea if that relay was original or if the horn harness was original, but they appeared to be.
there may be a picture of all of that in my project blog that is linked in my signature.
https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?topic_id=17478&viewmode=flat&order=ASC&type=&mode=0&start=40 post number 45 in the above link has many pictures. don't judge though...all of that junk wiring is now gone and the car is getting rewired.
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