How can I retrofit a fuse in my car?
Hello,
I have a Skoda Octavia iV (2023) and (as far as I know…) only have a 12V power connection in the rear of the trunk. However, I would like to retrofit a dashcam and a fast-charging power pack/adapter. However, I would also prefer not to have the option of connecting a cooler in the trunk (at the same time).
So I may have quickly exceeded the 15 or 20A that the 12V sockets are usually protected with… I would have connected the whole thing to the fuse box (next to the steering wheel) with an adapter cable like this ( https://www.amazon.de/gp/product/B0CHJQNZSW/ref=ox_sc_act_image_8?smid=A394XV48IUDZC&psc=1 ) – ie, to the fuse for the 12V connection in the trunk…
Or can I then draw twice the power because I have two fuses with the adapter, or will the fuse box not be able to keep up and get hot or something else happen…?
Greetings,
Tilo
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Keep your hands off such crafts
If you need more power you have to put an extra wire to an extra fuse and directly to the battery
And as a layman, keep your hands off the original power distribution
and very important, lay everything properly
Many a car has burned down due to botched work
But that's basically the same as hardwiring a dashcam, right?
That won't work. The wire cross-sections also have to be correct. So, I'll run a new cable. I don't know your car. There should be a distribution board on the positive terminal of the battery. Protect it with a line fuse.
And how do I do that if I only want power when the ignition is on?
Then connect a cable to the fuse that isn't powered when the ignition is off. You might want to use a stronger fuse instead. You'll have to do the math. Your two devices draw so little current that the cigarette lighter socket is perfectly adequate.
What do you want to connect to the PD? I don't know any devices, and certainly not a cell phone. There are plugs with only one USB port. Use that, and then you won't have to worry about any ifs or buts. Don't overdo it and use what's available. The manual explains everything. Forget the maximum 90 W. Your plug doesn't support that.
The adapter has 2x 60W PD and 2x 30W… if I only use the 2x PD ports, I get a total of up to 60W. This also applies to all 4 ports simultaneously…
It looks a bit opaque, and it's also way too complicated. Think about it. Your plug only delivers a maximum of 30W. It won't go any higher. If you want to achieve 90W, you'll need a converter. You can use it with your 220V charger. Believe me, the USB is enough for me to charge my phone.
If the link above doesn't work, this one works:
I made a sketch here… would it work like this or not?
https://postimg.cc/mh3FXrjv
I understand that… but when I'm on the go (eg 30 minutes) and my phone is at 15%, I would like to have faster charging than just about 5W…
I also use the USB ports in my car. Charging takes a little longer than with a 220V charger. My phone recognizes this. 90W doesn't work at the USB port. Then it only runs at 5V.
On the back seat, near the air conditioning, there's just a small compartment underneath, without any USB ports. The three front ports each output only 0.8A at 5V… (according to the USB tester)
It has (as far as I have searched everything on the center console) only 1x Wireless Charging and 2x USB C
My phone can charge at 90W… So… I'd expect 120W…
The new Octavia is equipped with four USB-C fast-charging ports (45 W) – two in the front and two in the rear. There's a fifth USB-C port (15W) in the rearview mirror for charging a dashcam. That should be enough and work. Use it.
120W would be if all ports were used, or 2 x PD. Actually, only 2 USB ports, each with 30W, are used. Only one is used to charge your phone. Even with 2 x 30W, that would be 5 amps. Why the trunk? There has to be a socket in the front too.
How much power does a 120W Fastcharge USB power supply draw?
( https://www.amazon.de/dp/B0D3XK5YYQ/ref=sspa_dk_rhf_search_pt_sub_2/?_encoding=UTF8&ie=UTF8&sp_csd= d2lkZ2V0TmFtZT1zcF9yaGZfc2VhcmNoX3BlcnNvbmFsaXplZA%3D%3D&pd_rd_w=Pezaz&content-id=amzn1.sym.f004435 d-82cd-4a1a-8fc5-4672fde4791b&pf_rd_p=f004435d-82cd-4a1a-8fc5-4672fde4791b&pf_rd_r=KHQK3387P3HH9RRA N56K&pd_rd_wg=PDhdb&pd_rd_r=89280f82-3d36-47b2-b45d-5d992c54ce49&ref_=sspa_dk_rhf_search_pt_sub&th=1 )
So… regarding the fuse… Can I simply connect a fuse splitter cable to the box and "double" the fuse for the cigarette lighter in the trunk? Can I then still draw the maximum load through both fuses, or will they split the load? Won't the fuse box get too hot if I draw the maximum load through it?