I modified my Nexus 7 to replace my stock radio in my Nissan Pathfinder.

I modified my Nexus 7 to replace my stock radio in my Nissan Pathfinder.

Finished Product.

The stock radio in my Pathfinder was a bit outdated. Aftermarket radios are nice and all, but I wanted to show off my DIY skills and try something new. After about 2-3 weeks of trial and errors, lots of glitches and errors, I got it to work exactly how I want it to. All of my friends, family, and co-workers are very jealous and amazed.
Parts Used.

Breakdown of Parts:
$100 – Nexus 7 2013 32GB WiFi (flo) (bought from /r/hardwareswap)
$5 – Nissan Radio Wiring Harness (www.amazon.com/gp/product/B0007KPS0A/)
$6 – AmazonBasics 4-Port USB 2.0 Hub (www.amazon.com/gp/product/B003M0NURK/)
$20 – Esky EC135-05 Rearview Camera (www.amazon.com/gp/product/B005Q65ZIK/)
$95 – JoyCon EXC (www.amazon.com/gp/product/B00QSNI5ZU/)
$7 – Tendak OTG USB cable (www.amazon.com/gp/product/B00V81L9M8/)
$30 – Behringer UCA202 (www.amazon.com/gp/product/B000KW2YEI/)
$7 – VideoSecu Amplified CCTV Microphone (www.amazon.com/gp/product/B0053V5Z9W/)
$25 – Timur's Kernel v4.0 for Nexus 7 2013 (timur.mobi/timurs-kernel-v4/)
$10 – Maxboost Car Charger (www.amazon.com/gp/product/B00ISGCAJM/)
Free/Other/Already owned – EasyCap USB Video Capture Card, RCA cables, 3.5mm audio cables, USB cables, 12-16 AWG wire, grinder, zipties, paper, hotglue, other random stuff.

TOTAL COST: ~$305

Time to mount the tablet.

The Nexus 7 2013 *barely* fits between the two vents. Even with a 90-degree USB cable, I still had to cut into the side of one of the vents 🙁 I wanted to do this mod without modifying the car in any way, so I can easily put it back to stock (plug and play style). It was worth it.
A little trimming into the side of the vent, and now the USB cable fits. I over judged how big the hole had to be, oh well. It's still a clean cut.
Tablet mounted, USB cable plugged in, and Microphone installed.

What it looks like from the front.

Jeez the camera picks up how dirty this is. Time to peal off the Plastidip and get a fresh coat on there. Please don't judge 🙁
Everything plugged in.

All the communication between the car and the tablet is done through USB (key power, sound, steering wheel controls, rear-view camera, other stuff).
Another view of everything plugged in.

The USB charger, JoyCon EXC, and the EasyCap indeed have paper over them to protect the electronics from shorting out. It was the easiest thing I could think of to make covers for them.
Closeup on the radio harness.

Figuring out how this car is wired was one of the hardest parts. There are so many different models of this car, that it was difficult finding which pinouts I actually need, and others I don't need. This vehicle has options for Bone Stock Radio/Speakers, Bose System without Nav, and Bose System with Nav. My Pathfinder has the Bose System without Nav.
Another picture of the wiring harness that I modified.

The wiring harness converts all the speakers to a 2 channel stereo feed (left and right).
Closeup of the USB hub and Audio DAC.

From the wiring harness, it converts to a 3.5mm jack, that plugs into the DAC for sound.
Wiring harness installed into the car.

I tried keeping it nice and clean. It was a bit tricky.
All installed!

Rear license plate camera installed!

Steering wheel controls.

The JoyCon EXC converts the voltage signals from the buttons, to keyboard commands that the tablet can read.
There is the microphone hidden in the vent.

I got the microphone to use it for Google Now for hands-free stuff like navigating to the nearest Taco Bell. You never know when you need some burritos!
All finished!

It works!

Thanks for taking the time and looking at my project!

Source : alexsgocart from Reddit