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#1 08-30-2012 16:52:39

jimmy
Helper
Registered: 09-27-2008
Posts: 22

Electrical question

I'm trying to think about what is needed to convert 24 volts down to 12 volts for a power supply for a vehicle. Basically I want to be able to supply 12 volts to various items from a 24v system. Any electronics wizards on here know what it would take? Thanks...

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08-30-2012 16:52:39

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Re: Electrical question

#2 08-30-2012 17:00:41

evad
Enthusiast
Registered: 10-05-2008
Posts: 240

Re: Electrical question

JCWhitney used to sell a 12/24 starter relay/solenoid. You would start up your vehicle on 24 volts but then it would revert back to 12 volts to charge up both batteries. I had to do that to 2 kit cars I modified to start larger engines. It basically looks like an old Ford external starter solenoid but with some extra wiring connected to it. I eventually used my last one on my '82 Wag as just an external starter solenoid. ;-)

Maybe some resistors might help you drop down the voltage or a separate 12 volt battery for your accessories.
Other than that.............I know nothing! <:-(

I am curious as to what you want to do???


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#3 08-30-2012 17:02:54

james
Rookie
Registered: 10-05-2008
Posts: 90

Re: Electrical question

Well I'm planning to pick up something that has a 24v electrical system as an investment to resell. But I have to drive it almost 500 miles home, and would like to be able to power a GPS and CB radio.

Oh, and the item to be picked up is large and green.

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#4 08-30-2012 17:04:54

evad
Enthusiast
Registered: 10-05-2008
Posts: 240

Re: Electrical question

Well does it have two 12v batteries?
If so take power off of only one of those batteries (the one with the neg post going to ground)
or can you bring a 12v battery or booster starter with you and just power your GPS and CB radio off of it?

Just thinking out loud and from inexperience with 24v systems! <:-)


Check out my Jeep XJ

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08-30-2012 17:04:54

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Re: Electrical question

#5 08-31-2012 09:32:55

jimmy
Helper
Registered: 09-27-2008
Posts: 22

Re: Electrical question

I actually answered my own question and found a converter on ebay. For $25 I don't have to mess with anything. But I appreciate the help. :-)

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#6 08-31-2012 09:36:45

Stein
Helper
Registered: 05-27-2009
Posts: 48

Re: Electrical question

Large and Green.....M35A2? Or M119? What is it?

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#7 08-31-2012 11:14:50

lean
Enthusiast
Registered: 10-05-2008
Posts: 141

Re: Electrical question

a big pile of money?
yup.
i'll take that!!

just take a set of wires with you (w/ an in-line fuse on one) and come off of just one battery independently to power your 2 accessories. nothing fancy.
just cheap-bastard extraordinaire!

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#8 08-31-2012 11:15:35

jimmy
Helper
Registered: 09-27-2008
Posts: 22

Re: Electrical question

M35A2. Either cargo truck or van body (I know someone specifically looking for a van to carry rescue equipment). I have a few $$$$ saved from stuff I sold (mainly the Hemi...sniff sniff...) so I could either just pay the last of the bills we owe, or invest, resell, and be able to pay back the bills AND have money left over. Probably kind of dumb, spend money when I need it most, but I'm still desperate to come up with dollars for the wife's schooling. My father doesn't even do this for a living, he just likes the big green iron and ends up making tons of money off them. Hopefully my rural location doesn't screw me again, although my father has connections and only lives a couple hours south of me.

Hopefully someday I can make enough so I can keep one for myself, like the M35A2 he bobbed, installed a slightly modified M105A2 trailer body (as a pickup body), with 11.00-20 Michelin radials on. He built it for himself. Then a guy at a rally he went to loved it, offered him a pile of cash, and he sold it...lol.

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#9 08-31-2012 12:21:37

trapper96
Rookie
Registered: 04-07-2010
Posts: 90

Re: Electrical question

I think I am hearing a deuce and a half in the background, I have NO idea how to drive one , and NO use for one at all but NEED one for sure ;-0

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#10 08-31-2012 12:45:06

lean
Enthusiast
Registered: 10-05-2008
Posts: 141

Re: Electrical question

agreed on all fronts!

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#11 08-31-2012 12:45:38

trapper96
Rookie
Registered: 04-07-2010
Posts: 90

Re: Electrical question

I just keep thinking of the road I live on when there is two feet of snow on it, the foot deep ruts and potholes would not be an issue anymore, I just have no clue as to how I could ever 'splain it to my wife. PLUS, if you own a truck that big , you have to have BIG arsed tools to maintain the sucker, not that I would mind that ....... hehheh

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#12 08-31-2012 12:47:59

lean
Enthusiast
Registered: 10-05-2008
Posts: 141

Re: Electrical question

it just has cool written all over it!

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