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Powering car LEDs via USB Answered

Hi guys,

I've always wanted to make my car (my parents car :'c ) a little bit more fun, It's a 10/11 year old ford fiesta without Bluetooth/USB. Here's what I would like to do, just wondering if anybody can see any problems with this. I know very little about power or how electronics work.

I want to be able to skip songs and answer calls without having to pick up my phone, for that I am going to buy this: https://www.amazon.co.uk/gp/product/B01E3UC59Q/ref=ox_sc_act_title_2?ie=UTF8&psc=1&smid=AP087GSGD7Y0R
Now this will use my cigarette lighter for power which is fine until I get to my next part.

I also wanted to put LED strips under each of the seats, and for that I would buy this: https://www.amazon.co.uk/Possbay-Interior-Atmosphere-Decoration-Sound-activated/dp/B017VSY3RY/ref=sr_1_3?ie=UTF8&qid=1477573217&sr=8-3&keywords=car+accessories

As you can see, that also requires the use of the cigarette lighter. What I want to do to get around the problem is buy this "1M USB DC 5V To DC 9V 12V" cable and also plug that into one of the USB slots: https://www.amazon.co.uk/2-1mm-Module-Converter-Barrel-Connector/dp/B01G56J4I6/ref=sr_1_2?ie=UTF8&qid=1477573430&sr=8-2&keywords=usb+5v+to+12v. Do you reckon this is possible? Are there any obvious problems with what I'm trying to do that I may have missed/not be aware of?

Tim Clark



1 year ago

buy a 12v cigarette socket from pound land it will use the lighter socket but will provide two 12v and 1 usb 5v like the pic

pic is generic and not mine or poundland one either but they are similar


2 years ago

I am fairly certain the LED controller uses 12V without any step down converter inside the lighter plug.
Maybe a switch to turn it off but that's it.
So you can simply disconnect the plug and wire the controller directly to the cars 12V system.
Either over the ignition circuit so it is only on when the motor is running or with a seperate switch and fuse to turn it on and off whenever you like.


2 years ago

Just realised I might have posted this in the wrong place and should have asked it as a question? sorry!