well ive got a pioneer DEH-P6800 head unit and everytime it turns off it doesnt save all the settings. ive been told ive got the ignition live and perm live mixed up but i dont know whats what cos my mate connected it all up. it is just chopped wires at the back there is no block there. i At the moment ive got the red and yellow cables (from the head unit) connected to the blue cable and the black cable connected to the yellow and green one. theres still one browny/pink cable left to connect to something? what is that one for?