I need some guidance on finishing the installation of my c.d. player into a '93 Toyota Corolla. Thus far I am able to have it come on, however I cannot for the life of me, get the player to keep its memory (ie. I can't successfully find the wire with a constant battery connection). How I would think it should be wired is battery into constant +12V, ACC into switched. When I do this nothing works tho. It only works when the battery wire is with the ACC. wire and those two are with the switched (grey) wire. Is the constant wire blue/yellow on this car? and if so does the constant wire need to have a fuse between it and the radio battery wre to work? Really frustrated and could use some help...PLEASE!!!