im trying to reinstall my sub to my amp but how do i get the speaker wire into the amp? also how do i know which is positive and negative for the rca cables on the amp? I'm using two 13ov.2 d4 and a nine.1 amp

 

positive(+) to positive(+), negative(-) to negative(-). Pretty sure you need an allen key to loosen/tighten the screw to the wires.

Edit: For the RCA cables, doesnt matter which color you choose, just designate one color for + and one for -

 

x2

 

If there's no clear + or - markings, look at the wires, and maybe one will have a faint stripe on it somewhere down the line. Use that as your marker.