I have a 1993 Classic Ultra. My Radio burned out an I now have a 2006 Harmone Kardone to put back in. I also have the 23 pin and 35 pin harness connectors to go with it. I had to wire the connectors (mostly the 23 pin), ( just the rear speaker connections on the 35). No back seat controls. I cannot seem to get it to turn on. I checked it in another bike and it works. Can anyone give me some ideas?