If you are going to mount the relay close to the lights, then I would run
a fat wire directly to the positive terminal of the battery.

David Marshall
 
http://www.hasenwerk.ca
Box 4153,
Quesnel BC, Canada V2J 3J

On Thu, July 31, 2008 12:46, Don
Hanson wrote:
> 
> Hi all,
> 
>   I am
installing some KC Daylighter lights onto my 84 vans front bumper.
> These came from my now retired big Ford.  100 watt bulbs, you see
em
> everywhere on showboat trucks and buggies, the big round ones
with the
> 'smiler face' covers sometimes.
> 
>  
Anyhow, I used these on my pickup in Baja and on deserted roads and
> they've saved me a few cow and deer encounters so now they are
going onto
> the van.
>   So far, I have all the stuff and
the hardware is in place, with the
> lights
> drilled into
the bumpers right under my headlights.  I also have a genuine
> VW
auxiliary light switch for the blank position in my dash switch panel.
> Here's my plan..see if it makes sense.  I plan to take a small lead
from
> my
> high beams, probably from the fuse panel and
run that to the aux light
> switch.  I will use the aux light
switch to control a 30 amp relay to
> power
> the lights,
but the aux. light switch will only get power through the
>
switch
> if the high beams are on.  So, if I want the aux lights
on, I have to run
> the high beams..and if I dim the high beams,
the aux light switch will no
> longer power that relay, so the
auxiliary lights will go off also.  Just
> in
> case I am
on a mountain road and come round a corner encountering a stray
>
vehicle with my driving lights on, a quick dip of the high beams will
kill
> em. (as is mandated by law, too, I think, though the KC
lights aren't
> highway legal anyhow.)
> 
>   So
the question is, where is a good place to get some power for the
>
power
> side of the light relay I plan to install as close to the
lights as
> possible.  Shorter is better, right?  But I don't want
to chance
> overloading
> a critical circuit so what would
be good?  I could come forward from my
> coach battery (under the
driver seat) or maybe from the fan power supply.
> Not the
headlights..as I'd hate blowing a fuse and being lightless at
>
speed..
>   any suggestions, any 'gotchas' with my plan?
>
  Thanks,
>  Don Hanson
> 
>   I don't care if it
doesn't look 'factory'.  I can live with extra
> visible
>
wires.  Easy of install overrides beauty, but durability and function
> trumps
> all.
>