Wiring 4 dash cams

[Niz55]

So each dash cam is rated @ 3amp. I will be installing 4 of them. I will be connecting all dash cams to one add a circuit fuse tap harness. Do I use a 12amp fuse or a 3amp?

Here is a picture. 4 red lines are 4 dash cam positive wires that connect to one add a circuit fuse.

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[DCShelby]

You need 12 amps at a minimum. But that leaves you no room. I’d find a higher amp circuit, perhaps one at 15 amps rated.

 

[Kado]

Niz55, I think you might want to recheck the power requirements. 3 amps seems extremely high for a dash cam. I don't think I've seen a dash cam require over 1A @ 12V. Are you sure you're not reading watts?

Also, if it really is Qty 4, 3Amp loads, you normally want a 50% overage for safety. I'd say you'd need a 20amp circuit to handle that much. You might want to consider running a separate line from the distribution block for that much current draw.

 

[Niz55]

Yes you are right. Output is 5v 1amp.

Here is the tricky part. I have to install a 12v to 5v convertor that the camera manufacture sells.

The convertor output is 5v @ 1.5amp. do I need to install 4 of these convertors or I can connect all 4 cameras into one convertor?

 

[Niz55]

So basically from the fuse box first connects the add of circuit fuse holder and than the convertor.

 

[DCShelby]

add and total up the wattage of the cameras, if its more than the converter can do or supply.....then you need a converter that will allow more current. I would not do a converter for each camera. Try digikey for real electronics supplies., not that ebay or amazon junk. If each camera needs .25 watts, then thats 1 watt total with .5 amps to spare.

 

[Kado]

You need something like this: https://www.digikey.com/product-detail/en/seeed-technology-co-ltd/313080006/1597-1243-ND/5488036

Tap it into your 15 or 20A ACC power line with a 5A fuse and you should be good to go. Connect all the cameras in parallel (Positives connected together, Grounds connected together).

 

[Niz55]

Perfect thank you all.

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