Splicing USB Wiring on Head Unit

Hi all, I have a 2022 TRD Sport and would like to hide my wireless android auto device (Motorola MA1) and turn the USB port in the dash into a charger. Wanted to get some input on the feasability/safety of what I intend to do.

I plan on purchasing

$12 Quick Charge QC3.0 USB Step Down Converter (2)

this step down converter and cutting the female USB A end off. Next, I plan on cutting the wire that plugs in the back of the head unit that goes to the USB receiver in the dash. Then splice the USB A end into the cut plug wire and plugging the Motorola MA1 into that and mounting it somewhere in the dash. Finally, I plan on tapping into the cigarette lighter to power the converter and then splicing the other end where the USB A receiver was cut off into USB at the dash. Would this work? Thanks in advance.

 

unfortunately, it won't work-- quick charge has a communication aspect that requires the 2 communication wires to get the charger and the device to-be-charged to decide at which voltage to charge at, which will definitely mess with the oem radio's usb communication methods.

 

Would this

$14 Weewooday 12V to 5V DC Converter Buck Module USB Output Power Adapter DC Power Adapter Converter DC to DC Regulator Car Power Converter (2)

converter work? It's not a quick charge one.

 

Here’s a quick charge that I’m using and goes in factory blank .

 

Not sure that would fit my dash. Below is a picture of my dash, right now I have the

$55 Motorola MA1 Wireless Android Auto Car Adapter - Instant Connection Using Google-Licensed Bridge Technology from Smartphone to Screen - USB Type-A Plug-in - Secure Gel Pad

Motorola MA1 taped to the dash. I'd like to hide it inside the dash. Just need to know if what I proposed in my OP would work. Not really concerned about quick charging, just want the charger to work, ideally by tapping into the cigarette lighter with the converter.

 

I think the 2nd converter you posted would work with your set up better than the 1st. I wouldn’t mess with splicing wires on the radio usb but you might be able to get some type of splitter and make it work.

 

possibly. it stands a better chance, just depends on the intelligence of the oem radio's usb port. some care, some don't.

 

I originally got the idea from this post; the main difference is Murphy wired the head unit wire to a lightning cable end to directly plug into his iPhone instead of wiring it to a USB A receiver like I intend to do. I think I'll give it a try. What's the worst that could happen?