2020 Mazda 3, Non-Bose Amplifier Wiring Diagram

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Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=146308
Printed Date: May 11, 2025 at 6:01 PM

Topic: 2020 Mazda 3, Non-Bose Amplifier Wiring Diagram

Posted By: mattsdaddy
Subject: 2020 Mazda 3, Non-Bose Amplifier Wiring Diagram
Date Posted: July 03, 2020 at 11:22 AM

I am looking for the wiring diagram for the 2020 Mazda 3 sedan non-Bose amplifier under the passenger seat. I want to add a subwoofer to fill out the missing bass in the system. My understanding is the best speakers to tap off from are the speakers now located at the feet of the front passengers. They carry the bass of the system since there is only a tweeter in the rear deck of the sedans now.

Thanks

Replies:

Posted By: i am an idiot
Date Posted: July 03, 2020 at 2:28 PM

I did a 19 the other day. On drivers side above the fuse box, there is a 4 or 5 inch sub. There is a plug with 2 wires that plugs into the enclosure. It is very obvious that it is the wire for that speaker.

Posted By: mattsdaddy
Date Posted: July 03, 2020 at 6:51 PM

Awesome. Found both of them: driver and passenger side. Thanks!

Did you wire the sub to both speakers?

BTW, which one did you install? I am looking to install an under the seat sub.

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