I just finished installing the sub and amp. It sounds awesome.

I have an aftermarket NAV system (Pioneer AVIC-F90BT). So i am using the Sub RCA Pre-outs coming from the head unit. There are a lot of controls in the head unit to control the output to the sub.

It sounds pretty decent with the current settings. But, I think it needs some tweaking on the audio side.

Here are some more tips for future modders.

1. Blue/white box in the top left corner of spare tire is the power distribution block (2004+). You do not have to remove the spare tire , but removing is will make it lot easier to work with.
2. You need to aquire a 5mm nut to fasten the positive cable to the power block.