Hello All,

This is my first attempt at a DIY so forgive me if it may be missing anything/was already done/posted in the wrong area, etc. With that said, let's begin!

So my G37, is an 08 with non nav, with bose. There is no back up cam either, and is just literally the original head unit. In my center cubby, there is the RCA aux inputs, Apple 30 pin nonsense, and the Car Charging Port. What lead to the need for bluetooth was when I realized my new phone (OP8 Pro) had no headphone jack.... So i was off to find a Bluetooth Receiver to solve this issue. At first, I had an older non powered receiver, that had doo doo sound quality and did not want that for my upcoming road trip. My other option was a not so old, FM receiver that could plug in and broadcast but, radio static was a killer and besides its 2020. I could upgrade the head unit to something else but didnt want to spend a day installing or the money to be honest. In the future, I will try and do the Android Auto Raspberry Pi as pioneered by iCrap but until then...

So after some research, I found a nice powered bluetooth receiver, that had Qualcomm HD output and it was roughly 50 bucks! I rather the HD output for obvious reasons, but was really surprised by how much better it sounded than standard youtube.



Rocketfish Unit RF-BTR319



Make sure you switch on Qualcomm



Now disassemble the center console.... Excuse my mess...




Instead of drilling holes, I chose to remove my Apple Plug. 2 tabs on each side, squeeze them in and use some gentle persuasion to get them out.




I thought about removing the core by drilling it out, as to give it a more clean finish when installing but, I decided to just re attach to the connector and keep it hidden under the console. As u noticed, my tabs are gouged. I fit matters how it looks, use a plastic trim tool...



Lots of room for dem cables... Slide them on in...





Because its a powered unit, I went ahead and used my Anker, double usb charger that supports Qi charging. Its more than enough to power the receiver, and will power my Scosche Unit once I figure out how to mount that properly...cause you know...G37 dashboards be melting...





Lots of room for cables, but this is anxiety for me. Cable mgmt is a must. At this point you chould check to make sure everything is working (radio etc...)





Looking for a suitable mounting space, there is enough space on the inside panels on either side of the shifter right where it meets with the cup holder trim. It also allows for it to be mounted flushly without any clearance issues. I chose the driver side as it was a little bit roomier...





Using some double sided 3m tape, i cut 2 strips of 1in thickness and put them between the rubber pads and wall mount holes. I kept the rubber pads on as it was at the same height with the tape and it would help with any vibrations.





Cable mgmt done!. Wires coiled and tucked neatly, BT Receiver firmly in place. Retest one more time before putting it all back. Also, if in there is dirty, nows a good time to do some cleanup!




Nice and clutter free from a bulky unit and coiled wires...





Should have put the tray on the first slot, to show cubby hole depth...

So thats it basically. Shouldnt take you more than 30 minutes or. so. Quick, Simple and Straightforward for anyone looking to add a little more functionality to their G... As they say, on to the next one...

 

Do you get any power noise over the aux line? A hiss or whine proportional to engine load?
I've done similar in other cars, but always needed an isolated buck converter to eliminate the ground loop noise. Otherwise there's that awful whining noise.
fwiw I use these boards (https://www.tinyosshop.com/index.php...product_id=965). There's a bunch of options. I got one with a microphone input, and retrofitted hands-free calling in my old BMW.

 

Did a similar thing in my 07 years ago, but yes like BeeW said I also had to add a ground loop isolator to eliminate the humming noises.

 

I had a hell of a time finding a iso-buck to step down the voltage. Only product on the entire internet was (https://www.tinyosshop.com/index.php...product_id=965) I would absolutely love to get another source. Others have asked me, so I'm considering packaging a $50 Bluetooth retrofit the way I did it. Its a cheaper alternative to Ted's $275 BlueBus (a 1-step install chipset t to seamlessly integrate OEM systems and modern Bluetooth and more in radwood-era BMWs).

It would have been easier, but I didn't want to step down with resistors b/c of fire concerns.

Did you do the isolation on the audio side? I didn't b/c every option out there uses super low quality transformers and you lose of the entire low end frequency response (usually below 200hz). Also Jensen doesn't make a consumer grade ground loop isolator (yet).


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@BeeW @iCrap I havent noticed any whining noises while stationary or during any engine load and Ive been using it for about a little over a week. Here are the specs from the Qualcomm aptX HD website.

Sound quality: THD+N@1kHz: -80dB, SNR@1kHz: 129dB, PEAQ audio quality: -0.05
Audio Encoding: 24-bit, up to 48kHz sampling rate
Program memory usage: 3.3kwords (encoder) / 3.6kwords (decoder)
Data memory usage: 1.8kwords
Bit Rate: 576 Kbits (48 kHz sampling)
Capability: Backwards compatible with existing aptX products

Not sure if any of it makes a difference, I also use a 24k Gold plated/oxy free copper RCA cables similar to the ones on tinyosshop. Im hoping that it helps with reducing any of the humming noise that may be heard. If i do hear anything, Ill report back...

 

I'll sum it up to electrical magic! Maybe Infiniti uses a better head unit, or these nicer streaming units have built in isolators.
Cables are important and RCA is a better design than the standard 3.5mm, the ground sheaths the positive wire over the whole length of the cable. Electricity is wierd and somehow it isolates the ac noise better.

Great DiY, like how detailed it is.