2016 - 2021 Mazda CX-3 5 Channel Amp and Sub Install

Parts used linked in the description below!
Watch a full tutorial as a 2018 Mazda CX-3 will have a new 5 channel amplifier and subwoofer added to the factory audio sound system. This vehicle was not equipped with the factory Bose sound system.
This video applies to Mazda CX-3 models for years 2016, 2017, 2018, 2019, 2020, and 2021. This video also includes complete amplifier wiring, installation, and testing.
Click here for the front door speaker install video:
• 2016 - 2021 Mazda CX-3...
Click here for the rear door speaker install video:
• 2016 - 2021 Mazda CX-3...
NOTE: If you have the Bose sound system, we the technique for installing your amplifier will slightly be different as you will need to bypass the factory Bose amp if installing a 5 channel amplifier. Instead of using the Axxess T-harness, you will use the harness linked below which you will bypass and create a T-harness at the Bose amplifier, leaving the factory radio alone. It will be the same technique, just completed at the Bose amp located under the passenger front seat. If just simply installing a mono amp and sub, no bypass is needed, and you can access the Bose subwoofer for signal in the spare tire compartment.
If you have any questions, leave a comment below! Be sure to like and subscribe!
Parts used in this install (Amazon Associate Paid Links):
*Alpine X-A90V 5 Channel Amplifier: amzn.to/3QbfajK
*AudioControl LC7i: amzn.to/3zRQXXY
*4 Gauge OFC Amplifier Wiring Kit: amzn.to/34QaiuB
*20' 9 Conductor Speaker Wire MC918-20: amzn.to/3xK4PSk
*3x Pairs 2 channel RCA Cables 1.5': amzn.to/3B7GQPx
*Kicker 12" 43TCWRT122 Subwoofer: amzn.to/3zGwR3J
*10' 18 Gauge Power / Ground Wire: amzn.to/3SzHBcJ
*Axxess T Harness AX-DSP-MAZ1: amzn.to/3vN7o7Q
--If you have Bose, you will need the Pac Audio Bose Bypass Harness instead of the Axxess T harness. Bose amp located under passenger front seat. This harness has been untested, but harnesses should be the same as the GM Bose amplifier. Suggest to verify connections before install. *PAC APH-GM02: amzn.to/3vOyiMs
Disclosure: As an Amazon Associate I earn from qualifying purchases

[@ProvoBeastAudio]

Parts used linked in the description of the video!

[@peanuthead9075]

This is by far the best video explaining how to wire up the lc7i or any LOC to a factory head unit! I was so confused before but you made it very easy to understand! Thank you! 💪🏼💪🏼🙏🏼

[@jar6083]

You sir are awesome! This is by far the best video for this type on install. Perfection. I will be doing this on my Madza6 soon.

[@ericvogt7660]

Great Video! My 2016 CX-3 has the 7 speaker Bose system installed but I am still not thrilled with the power/kick of the audio... what is the best way to enhance the overall "power" and/or add additional bass (the subwoofer is mid at best). Also, could you add Apple Play to this car/audio system?

[@K03sport]

thanks. I'm putting a JBL BassPro Nano under the passenger seat (wife's request for unobtrusive sub). I need to run the power wire across and I guess the best place to do that is behind the dash (under the carpet of course). I too will "rob" the front speakers for signal to the Nano. Curious if I should splice into the factory harness (output) for speaker signal or tap into each door speaker? IF I do the door speakers, I will have to mess with getting wire through the door jam. Tapping at the harness might be easier.

[@shahnawaaz5128]

I have Mazda cx3 2018 with Bose. Can you explain how to bypass the Bose amp using the harness that you mentioned in the description?

[@skaibergcollins3501]

What gauge is the wires u soldered if I wanted to crimp them

[@albertogomez8250]

Would this harness work for 2016 cx5 non bose system?

[@bryanbroyles2472]

Have you done a 2023 mazda 3 sedan or would it be the same as the cx30?

[@EstebanMartinez-rk1gp]

Hello. U think this harness would work on a 2024 cx5

[@monchisnake]

Does is work with a Mazda 2 2023?

[@BOOMBlueb]

How if I want only output to connect active speaker

[@blakestuart9090]

Would you possibly know if this would apply to the Mazda 6, non Bose? As far as the module to T into?

[@devinwright286]

How much did the whole install cost the costumer?

[@dimitrihoward9722]

Wouldn’t it be the same for a cx-9

[@axi6ne8us]

Hi! My 2015 Mazda 3 iGT sedan with BOSE system has a left audio sound issue. Hardly any sound on left speakers. Could it be the Amp causing this or some sort of short?

[@513blah]

aww.. no sound demo?

[@d77543020]

That amplifier brand new is like 900 bucks and it doesn't have high level inputs crazy

[@simracingelite4004]

i have a mazda 6 2022 standard with no nav headunit, problem i am facing is to replace the thing. i tried several android headunits, issue is that call and voice buttons wont work with android headunit.

[@laptech3767]

Is it possible just to tap into the signal bypass Bose for one subwoofer. Because Bose subwoofer has bad dsp from Bose