How to connect a after market pyle radio to a VW wire harnness?

i bought a VW wire harness and a new after market pyle radio sytem. i was just wondering how to connect the wires. there are four wires coming out of the radio (Green, Red, Grey, and black) and the wire harness has 12 wires coming out of it (2 white, 2 grey, 2 green, 2 purple, 1 black, 1 yellow, 1 red, and 1 orange) some wires have black stripes going down them and some dont. how do i match them up anf how do i connect them?|||from your radio to the harness should be color to color. The most important are yellow(acc),black(ground),red(constant power),orange is (illumination-not needed to be used if you dont have the features in your radio)) everything else is mainly for the speakers (the ones with black lines are the negative for the speakers)...