Additional USB sockets activated on ignition

[mike2060]

Hey there. I am looking for a way to add additional USB socket that would:

• be used to power two wireless chargers 15W
• be on only when ignition is on.
• be hidden somewhere behind all the plastics - I found a way to route the cable out and to the chargers on the passenger side, not yet started on drivers side

Can someone advise where to look for a wire to hook up into to pull the power ? I assume some 12/24V. I was thinking of using something like this one from amazon

 

[Dellmassive]

12v Igntn Feed + 5xusb Charging From Ign Feed - Today's Install

So here is Phase#2 A 12v Ignition feed for gadgets and also a 12v socket behing the dash with a 5xUSB power outlet. The Dash and trim were already apart from phase#1 so we continue from there.... We got a 12v socket extension cable again (15A max, 3mtrs long) and cut it down to size. we...

www.t6forum.com

 

[mike2060]

Thank you!
Why did you pick this particular fuse?

I did not strip the DSG pillar yet. To be honest, I never noticed there might be a fuse box there, so originally I was thinking of hooking up to the F16 30A fuse in the driver side fuse box, marked F16 here in Fuse Holder C. It is described as Onboard supply control unit -J519-Windscreen wiper motor -V-. A note here - UK vans may have this diagram mirrored.

Would that work ? The rest as in your post (5A fuse). I won't have any additional usb ports at there, just for those two chargers.