Sorry i didnt specify, im trying to get the hooked up with the RCA feed's, the Signal feed and i already have a power distribution block to feed both power lines and both ground lines. I know i should be getting a monoblock amp but this is what im working with till a few weeks when i get my new MTX 4 channel and monoblock amp's. The problem with the RCA feeds is that on the back of my HU there is only a rear + and - out, a front + and - out and an input + and - and iv read somewhere that the input was for the XM ready capabilities with another sony adaptor but i could be wrong, the model of my headunit is a Sony CDX-R3310 i havent had much luck finding out info about it, only the 3300 model and that has lesser capabilities.