you installing a sub?
if so connect it all up making sure you connect your earth first before anything. then your power. then carefully push your remote wire into the terminals where the wires meet your head unit wiring. if it comes on without ignition its live and if it turns on with ignition and off with ignition its blue.
theres 2 groups of wiring. one half is made up of purple and grey and green type wires and theres 8 of them. (speakers)
the others are about 5-6 in numbers and are for your power. 1 will be live and another will be remote.