Thanks Dave - helpful as always
Yes, the headlights are the same.The switch wiring diagram helps confirm what I already have in my harness, but it is still not clear which plug in the headlight base is "pass", "tilt", etc. It is interesting that only two of the filaments are used in the left light vs all three in the right. The plugs in the base are there to allow you to disconnect the headlights when removing them from the headlight support casting. If you are feeling especially adventuresome, you might loosen and remove the pinch bolt on the casting and slide out one of the headlights and note the relationship of the wire color to the port. Don't drop that light.
The horns appear to have an insulator block on the mounting, but there is continuity between the support casting and the horn, so this still doesn't make sense. '33's did not use a horn relay, as I can tell from the wiring diagrams and the parts book. The engineers obviously quickly recognized that a relay should really be used for the horns. I may actually add this hidden improvement to my wiring.
1933 Packard 1003 Super 8
92 Porsche C4, 93 Porsche C4, assorted Honda's, Toyotas, ....