Ecto Roof Wiring

So I finally have my 62 Caddie ready for body work and the roof rack ready for assembly. I plan to have a secondary battery setup for the roof, and I have a 150a alternator installed.

Looking to see if anyone out there has any tips (or even a diagram) of how they have their roof stuff hooked up. I have all movie accurate parts including the lightbars, federal siren, propelloray, and par46 deck lights.

We’re working on a '66 Miller Meteor Classic Limousine Ecto, and would also appreciate any tips or info on wiring up the deck lights and Propelloray.