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#1 |
Registered User
Join Date: Jan 2017
Location: Le Sueur MN
Posts: 209
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Under Hood Jump Box: How Does This Work?
I have what I presume is a jump box, that is under the hood of my 84 wrecker. I'm having trouble finding info about how it works; since it must serve a purpose vs just running quick connect jumper cables.
I need to draw a wiring diagram to help figure it out. It has two 12 volt batteries in series going to one solenoid and a 6 volt battery going to a solenoid on the other side. The 6 volt battery is kind of throwing me for a loop. Hopefully someone has seen one before to clue me in on how they work. Thanks
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#2 |
Post Whore
![]() ![]() Join Date: May 2015
Location: Alabama
Posts: 14,692
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Re: Under Hood Jump Box: How Does This Work?
Never seen anything like it....any numbers or name on it?
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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#3 |
Registered User
Join Date: Jan 2017
Location: Le Sueur MN
Posts: 209
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Re: Under Hood Jump Box: How Does This Work?
Not on the top or the sides. I should pull the top and see if there are any numbers inside. I know there is a light bulb inside of it that turns on with the key. Which it must be using as a load of some sort.
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#4 |
Post Whore
![]() ![]() Join Date: May 2015
Location: Alabama
Posts: 14,692
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Re: Under Hood Jump Box: How Does This Work?
Something about it makes me wonder if it's a jump box or not..
Could it be part of the wrecker part of your truck? That 12v and 6v battery sounds strange
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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#5 |
Senior Member
![]() Join Date: Mar 2003
Location: Colfax-California
Posts: 8,721
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Re: Under Hood Jump Box: How Does This Work?
I believe that is the control box for the flashing/emergency lights
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#6 |
Registered User
Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 2,663
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Re: Under Hood Jump Box: How Does This Work?
Don't see any cables that look heavy enough to be jumper cable rated. I do see two switches and a fuse holder. Given the various batteries, could be a voltage converter to keep everything charged.
Two 12v batteries in series will give the 24V a lot of heavy duty vehicles need to start. The 6V battery could be to jump the odd ball old vehicle that is still 6V. Both are something a general purpose wrecker would need. |
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#7 |
Registered User
Join Date: Feb 2017
Location: Ontario Canada
Posts: 136
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Re: Under Hood Jump Box: How Does This Work?
It looks like a charge controller. Charges 12 or 6 volt batteries depending what you select, and can flip between the alternator charging or regular 110 household.
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#8 | |
Registered User
Join Date: Jan 2017
Location: Le Sueur MN
Posts: 209
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Re: Under Hood Jump Box: How Does This Work?
Quote:
I will be at the truck tomorrow and will get more pictures of how it connects.
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