If you look at the left side (opposite side of the ignition) behind the steering wheel... There is a piece of plastic that clips off..
Is this there so we can add audio controls later on?

 

I thought it is for NOS switch? =)
I wanted to get a 2k1 audio control...and I actually opened that little panel. but there is not wiring or anything that u can hook it up. I quoted the audio control too...$215...

 

http://forums.maxima.org/showthread....849#post276849

Go to this post there are pics regarding this topic