most amps have written on them how to do it. You usualy use the + of one chanel and the - of the other and ignore the other wires but what is the mke and model of your amp
now it's a ic based stereo ready made .... jus 40 + 40 rms.... each channel.... now the problem is there is no + or - in the out puts... as both the out puts are thru the ic s pins.... help me