HElp. I have a kenwood cd disc changer that I pulled out of an acura it was stock Im trying to

Question

I have a kenwood cd disc changer that I pulled out of an acura it was stock Im trying to install it in my blazer to a pioneer deck. I got the unit to power on and everything seemed functional but it would not load the cd in the magizine or put out any sound. There was a blue wire that was tied into the red power wire and was wondering if that was part of my problem or if it is useless to try to connect these different brands. Any useful suggestions would be much appreciated