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24-12v converter. Am I going about this right?

Atchuuu

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Installed a 24v converter. Plan to connect to the positive and negative battery terminals to converter then to a blue sea fuse box. The Blue Sea (photo below) does not have a negative connection so I will run the negative to the stud on the engine or can also run to the negative lug in the batter compartment.

The only issue I can see is having to run each item to the negative on the engine instead of buying a fuse box that already has a negative bus.

I purchased this setup before I knew I could run everything off the 12v side of the alternator and I haven’t researched that option.

Any opinions, warnings or suggestions are welcome.🙏
 

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ikoinu

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Los Angeles, CA
As long as you have the 200 or 400 amp dual voltage alternator, you can pull 12v off it.
I installed a 200 after already installing a Victron 24 to 12v inverter, so just grounded the 12v feed of the alternator out.

For your 12v accessories, you can run a single 12v- to a small bus bar near your accessories to pull negative from. Or you could swap out your current Blue Sea fuse block for one like the picture attached, which has + and -.

Pictures attached are of the fuse block I use (+-), as well as a dual bus bar as well as a single bus bar.

With bus bars, you have to be careful of exposed + voltage accidentally shorting to the body in high traffic areas.
 

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Mogman

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Papalote, TX
Installed a 24v converter. Plan to connect to the positive and negative battery terminals to converter then to a blue sea fuse box. The Blue Sea (photo below) does not have a negative connection so I will run the negative to the stud on the engine or can also run to the negative lug in the batter compartment.

The only issue I can see is having to run each item to the negative on the engine instead of buying a fuse box that already has a negative bus.

I purchased this setup before I knew I could run everything off the 12v side of the alternator and I haven’t researched that option.

Any opinions, warnings or suggestions are welcome.🙏
I do not see a 24V-12V converter only a fuse panel, what alternator do you have and how many amps at 12V do you expect to pull?
 

Atchuuu

Active member
Steel Soldiers Supporter
105
104
43
Location
MS
As long as you have the 200 or 400 amp dual voltage alternator, you can pull 12v off it.
I installed a 200 after already installing a Victron 24 to 12v inverter, so just grounded the 12v feed of the alternator out.

For your 12v accessories, you can run a single 12v- to a small bus bar near your accessories to pull negative from. Or you could swap out your current Blue Sea fuse block for one like the picture attached, which has + and -.

Pictures attached are of the fuse block I use (+-), as well as a dual bus bar as well as a single bus bar.

With bus bars, you have to be careful of exposed + voltage accidentally shorting to the body in high traffic areas.
I did get a blue sea with ground. Everything works great. Was in a hurry so will use the 24-12 now and maybe switch to the 12v side of alternator later. Thank you all!👍
 
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