Cd Changer Cable?

[UsedBlue]

We are trying to install the original CD Changer and Radio back in our 94 after the previous owner installed some other JVC stuff. We looked under the seat and found a power connector and a round connector. We don't have the rectangle connector that goes in the back of the Changer. I found one on ebay that was called a 'CD Harness' part # AMR4832 - it has the rectangle part and the round part- but I don't see any power connector on it. It just doesn't look right. We're even wondering that if we do get them installed if the steering column buttons will even work.
Can anyone out there show us a pic of what it is supposed to look like under the seat for starters - or just tell us what is coming out of the seat as far as the plugs. Our Best Buy guys can't help us with these since LRs aren't that common I guess.
Also, does anyone know the part # to the panel that is supposed to go on the side of the seat at the bottom to shield this changer?
Thanks to anyone out there that has any of these answers!