EUREKA!! It took some digging but I was finally able to get the trunk interior out of the way enough to find the one wire not attached to something ... the wire with the 10 pin plug! Right where you said it would be!
Thank you sooo much Scott ... now I have to wait for the Peripheral adapter that has been on back order for weeks from Sound Domain to get here before I can go any further. Nothing ever installs easily for me so I'm sure I will be back with other questions!!!
Thanks again!