what are these things?

I just bought some display items sold as clearance sale from a store. I basically bought a CD player : Kenwood KDC-v7022 and a CD changer (Kenwood KDCC517FM) He also included a few accesories which I don't understand what they are.... 1. There is a small box (Kenwood) with a knob and says +6, +9 and +12 dB. I have seen such thing in a friend's car and I think its called bass control (?) But this thing has a wire like a telephone wire. Where does it go? Do some amps have telephone like jack for bass controll or something? 2. This thing is a long wire with a stereo pin (like headphone pin) on one end and a small black box with Power written on it on the other end? What is this? 3. Also the salesman said that the KDC-V7022 plays MP3s. Does it play MP3s? I am looking at the websites and no where I find specified that it plays MP3s. Well I will know soon after I install it but just in case someone has this model and can tell . Also it ll be great if I can get some reviews on this model. Thanks!

Is there any way you could post a picture of #2. anywhere?You'd better get me out of this lord... or else you'll have me to deal with. -- Hunter S. Thompson "F.A.L.I.L.V."

#2 sounds like it could be an IR remote sensor for a dvd player or somethingif its jammed force it - if it breaks in the process it needed to be fixed anyway

Thanks everyone. I tried to post the 2 pics on my homepage. Let me know if you cant see the page. http://24.194.34.37/~alpesh/ hope that help you in guessing the second item.

site didnt work. But yea, the IR sensor sounds about right to me. Probably for the cd changer though. 1990 Honda Civic HB:

Clarion DXZ545MP H.U.

2- 6.5" Power Acoustik interiors

Diamond Audio 600.1 amp

Diamond Audio 15" M6MKII

Pyramid PB881X 4 CH. Amp