I don't know if there's any car audio experts here but i'll ask anyway. Basically i've "new" cd player ( pioneer DEH-1700R ) and old car (ford sierra -85). pioneer has iso socket and in my car there's just bunch of wires there. It should be possible to just connect the wires one by one? Well i tried it with wires that I assumed to be the "power wires". They were, Black, Red and Yellow. There was also Orange wire going to my old radio, but there was no orange or similar wire coming out of the new radio, so I didn't plug it in at all. So i tried a few combinations and none of them worked. Anyone have experience of these kind of things? Just need some advice to how to make it work. Also there was safety fuses mounted in red and yellow wire, do I still need them with never radios? Or can/should i remove them? thanks in advance. EDIT: btw is there any easy way to test if that cd player is working at all?