HHmm... i think i can help...easy, actually... go to any audio shop...
buy some plug converter for your amp input(not sure about the name though) but u can ask about the tech guy...sure he'll know...
Just tell him you want to connect an open positive and negative audio wires to an input to your amp(eg. RCA,Plug,....) or your can describe the type of input your amp accept..
I hope i can help....cause i'm too using this type of converter or plug to my amp....saves the time to solder the plug....just stick it in and clamp it....