Wires went thataway : blue to the head unit, red to the iPod spot I chose : the ex-phone space. There were two holes left from the removal of the phone (p.o. kept it), so one of them now has a use. A wood piece covers the wire and the hole.
Joy ! Now I can ride with most of my music library !
I can't believe I installed it all at night. It worked out great. Just have a wire from the heating controls that has to be set right again.