I'm nearly done with all my LED upgrades. I was exceptionally surprised to find a chrome bar to attach the driving lights to. It was $20 on Amazon and easily attached to the Original Vespa front rack with two 5/8" stainless steel U clamps. I am still waiting on a Stebel horn so I can do the final wiring harness and all other mods without having to take the glove box panel off more than once. I'll run all the wires and install a "zombie lights" switch on the left side knee panel next to my USB-C, USB, voltmeter plug. The Stebel and driving lights will run in parallel from the battery with a fuse. The horn will have a 50amp weatherproof on-off push button on the left floor board. No relays for either since they are coming off the battery and can be activated unswitched. The light switch will be lit when it's on so I will be unlikely to walk away with the driving lights on.
Photo is the driving lights installed so far but not wired yet. The zip ties are there to secure the wiring for the lights.