Date: Thu, 11 May 2000 22:59:44 -0700
Reply-To: t <vbob@PRIMENET.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: t <vbob@PRIMENET.COM>
Subject: Re: What is the simplest way to get 12V in a 24V VW electrical
system?
Content-Type: text/plain; charset=us-ascii
Not to get too deep into it.. but when you set the load up in parrallel
with one of the lights, you have changed the load configuration. The two
light voltage divider probably won't work very well. Now... IMHO there
are two ways to do it. Use the 24 to 12 voltage divider you saw in the
store, or... fabricate a bracket for mounting a 12 volt alternator, set
up a regulator and run it to it's own battery. Doesn't have to be too
big a battery either. Tie all the grounds to the 24 volt ground. Run a
separate circuit up with distingusing wire for the hot side.
Personally, I would buy the 150 dollar voltage converter and be done
with it.
tim
David Marshall wrote:
>
> First off I appologise for a very minimal Vanagon content, but it does
> relate to a VW and it is part of my collection which includes two Vanagons...
>
> As many of you may already know I am the proud owner of a 1980 Volkswagen
> Iltis. For those who don't know, it is a military "jeep" that Volkswagen
> produced for the German Army from 1978 thru 1981 and was later produced in
> Canada from 1984 to 1985. Seeing how it is a military vehicle the
> electrical system is 24V DC as opposed to the 12V DC we are used to with
> our Vanagons. I want to be able to connect a CB / HF Transcever, VHF
> Transcever as well as a CD-Player in the dash. All of the radios that I
> have are 12V and will more than likely not appreciate the additional
> voltage.
>
> Some people suggested to me to take 12V off of one of the two 12V
> batteries. It has also been pointed out to me that this with setup cause
> uneven charging of the batteries and will constantly kill one battery.
>
> One item that was suggested to me was a 24V to 12V voltage regulator that
> can be bought at some truck stores for about $150.
>
> This is what I was thinking... it seems too simple so there must be a
> problem with it.
>
> Take two 12V lights and wire them in series (12+12=24). Use these at
> daytime running lights or something simular. Attach a 12V device in
> parallel to one of the lights as the difference across one of the lights
> would be 12V. I guess the flaw in my logic might be that if they were two
> IDENTICAL 12V lights then they would take 12V each... if one light, or one
> light and the 12V accessory attached to it take more current than the
> other, the voltage will be different... am I right or am I wrong?
>
> Thanks!
>
> -- David Marshall - Volkswagen Enthusiast - Quesnel, BC, Canada --
> -- 78 VW Rabbit, 80 VW Iltis, 80 VW Caddy, 84 VW Westfalia --
> -- 85 VW Cabriolet, 87 Audi 5000 Quattro, 88 VW Syncro Double Cab --
> -- David's Volkswagen Home Page http://www.volkswagen.org --
> -- Fast Forward Autobahn Sport Tuning http://www.fastforward.ca --
> -- david@volkswagen.org (pmail) or vanagon@volkswagen.org (list) --
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