On the LIL RUCK I'd be careful of voltage flucuactions. I found
a pair of PIAA voltage stabilizers on feeBay for about $60.
They are designed for H4 halogens (PIAA Bulbs are really
costly); but they work for the HID lights, also.
With aux. lights in HID you can't keep switching them
off and on; would be hard on the ballast. IN the H4
adapters with the magnetic reflectors might be better
when changing hi & lo beams. Don't know how long the
magnetic reflectors would work; haven't seen any reports
about it yet.
I'd recommend checking with www.suvlights.com
kit if you plan on changing up to HID. I'm adding a third
light above the headlights and will switch off the headlights
when running the HID driving lamp (to bright for urban use).
I am installing a Hella Compact 4000 with the conversion kit
from suvlights for my highway version of the, BR.
Total cost with the fixture (found on feeBay) and kit
from Suvlights.com is about $300 compared to the $400-500 from
Hella for an HID Compact 4000.
I'd recommend the HELLA MICRO Xenon if you want a clean
set up. It's the size of a pack of cigarettes; but is set up already
as a driving light. I'll pm you some photos of mine. I have two
BRs now and plan on running the small on one my URBAN RAT.
IF you plan on doing the change over from H4 headlamps it
can be a problem. Some kits use a magnetic reflector that
flips back and forth depending on which beam you need.
Most manufacturers would rather you purchase a made for
HID fixture if you want both HI & LO beams. They are
pricey, though. You can get a nice set of lights from, suvlights
that will do the job. I think they were the Sylvania 1010 or
something like that. They are aux. lights. I'd go toward driving
and fog lights set up in HID rather than mess with the H4 lamps.
For the LIL RUCK you might do better if you switch off the headlamps
when running an HID driving or fog lights.
In my state; you can run with only FOG lights in fog and rain.
Be carefull adding lights to the LIL RUCK,
the alternator is pretty small on the LIL RUCK. I think it's 180 watts; not sure.