Wiring My New Radio [PICS]

[mnight]

Hello all.

I am soldering the wires together for my stereo harness and have a couple wires that I'm not really sure what to do with.

Here's where I am at right now:
http://desmond.imageshack.us/Himg193/scaled.php?server=193&filename=1004962z.jpg&res=landing

I am wondering what to do with these two wires:
http://desmond.imageshack.us/Himg818/scaled.php?server=818&filename=1004956s.jpg&res=landing
http://desmond.imageshack.us/Himg809/scaled.php?server=809&filename=1004957.jpg&res=landing
blue is amp turn on and black is amp ground. There is no equivalent for the amp ground on the other side of the harness. There is just a regular (all black wire) ground coming from the new stereo plug. If I don't connect this black/white wire to anything what do I do with it, and where should I ground the all black ground wire?

Last question is what should I do with the wires I am not using?
http://desmond.imageshack.us/Himg194/scaled.php?server=194&filename=1004961n.jpg&res=landing

Should I just leave them bundled up like this or what should I do with them??

Thanks in advance, I appreciate any help as this is the first time I have dealt with any wiring and am still learning. Car is a '98 240sx SE fyi.

[Broadfield]

Just cap/tape off the black/white, blue/white, orange and orange/black. Then the unused wires on the new radio plug need to also be cap/taped off. If it's a wire that has the tag on it then it's essentially already taped off. The ground wire coming from the radio just needs to be attached to metal behind the radio. If you are using the OEM metal radio brackets then you can simply attach the ground behind one of the four screws that holds the OEM radio brackets into the dash.

[mnight]

Thanks for the help. I appreciate it.