Kenwood install questions

[jiriki]

I plan on installing a Kenwood 9980HD into a 2007 Armada with Bose no-Nav. I've been searching the forums but I cannot find an install write up. Plenty of threads where the install was complete

I received all the components to do this but before I start the project, I wanted a few questions cleared up:

1) Where do I hook up the reverse wire?

2) Where do I hook up the parking sensor wire? Or can I just ground it?

3) The kenwood unit has RCA preouts for the sub and center speaker but the Metra harness does not have those RCA connectors. Are those unused?

Thanks!

[jiriki]

Kenwood DNX9980HD is installed. I figured out the parking sensor wire.

Currently, the center is working.. very loudly I might add. The sub appears to not be working. Does the Bose AMP only take FR/FL/RR/RL inputs?

I'm still a bit lost on the reverse wires.

[lsp]

Is the reverse wire for a backup camera? I just tapped into the reverse lights on the back of the Armada. I just pulled out the lights and tested wires for 12 volts when in reverse.