Help wiring aftermarket stereo.

I bought a radio from a fellow jeeper. He doesn't have the infinity, I do. I noticed that his wire harness pin are slightly different than mine, only the can interior bus are not on the harness.

Right now the radio is turning on but no sound is playing. I guess that's because I have the infinity amp and there is something missing with the wiring.

Can it be related with CAN BUS?

Thanks.

Ok well, after some research, from what I understand if you have the infinity audio you have to buy a module like PAC in order to get the amp working.

http://www.pac-audio.com/productDetails.aspx?ProductId=407