wiring for ac and dc

[wence]

Ok guys,
I have done most of the wiring for the capacitor to regulator/rectifier.
The hid setup is a straight plug and play unit that plugs into the original light 3 pin plug. I am leaning towards the floating ground technique as there are grounds right the electrical system.
My dilemma is that (from looking at the wiring diagram), I have stuff like power controllers, horn, indicators and brake sensors.
I assume these need to run off of ac therefore I am asking the question as to where I should insert the rectifier etc .
By doing a split system I am also going to have to isolate all lights and light switches as I still want to use them.I will have an isolating switch for the lights so that I can start the bike and then flick lights on after cap is charged.
Is there any way to do this whole setup so that it can be reversed, if needed , quite easily?
I originally leant towards the non floating ground setup for this reason.
All help would be greatly appreciated.
Thanks in advance,

Mark