car audio wiring

I have recently bought a powered sub, 4 50 watt speakers and a pioneer MVH-S520DAB stero which has 4 channels and a dedicated sub out, I'm OK with how the sub works but it appears I need 4 single ended rca cables for the 4 rca outputs and the 4 speakers which are spade connectors ? This does not...

I have 2 JBL Stage 9603 6×9"s that are 70 rms each, 2 JBL Stage 602 6 1/2" that are 45 rms each, and 2 Skar TWS-01 1" that are 40 rms each. All of the speakers 4 ohms. I am thinking about getting the Planet Audio PL1600.4 4 channel amp that has a 150 watt output at 4 ohms per channel. I liked...