Easiest way to add a sub

This only applies to SR5 and above 2014-2021 Tundras without JBL.

All connections are made under the passenger seat at the factory amp. No need to pull the stereo or touch the dash at all.

I'm using a mono sub amp that has speaker level inputs, I prefer this to running a separate LOC since the sub amp is made to handle this internally with no noise or separate gain adjustments.

I chose to run my power wire from the battery then up and over the engine bay using the hood seal trim. You can see the loomed wire going up and over then entering the cab via the OEM grommet on the far left.


The wire will exit inside the cab just below the glove box. Pull the kick panel and door sill trim, route the wire inside the channel and secure.


This will exit under the passenger seat using the existing hole in the carpet. A bare metal ground bolt is also already under the seat you can use.

These are the plug and play harnesses from Taco Tunes after being wired for amp turn on and speaker level input. These plug directly into the OEM amp under the passenger seat.


Once that's done you make your final connections to your amp.


Then to your sub under the rear seat. The speaker wires for the sub follow the same OEM channel under the rear door sill.


Once everything is buttoned back up it's indistinguishable from a factory system...until you power it up. This little ported Skar 6.5 will bounce the mirrors with the supplied 500W.