So your stock Bose system has finally yee’d its last haw? Maybe you just want more bass. Whatever the reason, you don’t have many options for staying relatively “stock”.

To start, this upgrade works best if you have removed your spare tire. Therefore, I wouldn’t suggest doing this without roadside assistance on your insurance policy. Additionally, if you have replaced your Radio with an aftermarket head unit, you are good to go. If not, you will need some crossover adapters for the audio output.

Okay, the spare tire is removed…now what? You need an 8-inch low-profile subwoofer. The brand doesn’t really matter too much if you stick to those parameters. You also need to replace your factory amp with an aftermarket single channel.

Once you have your necessary components, its as easy as installing a standalone subwoofer.

1. Run your power wire from the battery, through the firewall, and to the trunk.
2. Run your audio output wires from the radio/crossover to the trunk.
3. If you have an aftermarket head unit, connect your remote amp turn-on wire to the blue wire on the radio harness. (If you are using a crossover, you can connect it to any ignition wire or fuse using an adapter).
4. Connect your ground to any solid metal point in your trunk.
5. Then pull your rear deck and subwoofer.
6. Swap the new subwoofer, and replace the rear deck.
7. Connect your amp to all appropriate wires and mount it in the spare tire location.
8. Run your speaker wire from the amp to the new subwoofer.
9. Finished.

That’s about it for keeping a stock looking system.

-Devan