99 Ultra switch over to non Ultra radio

[wayzalot]

Ok I have been kicking this can down the road all winter.  My stock 1999 Ultra radio has gone bad.  I have a non Ultra radio (no CB radio in it) and i installed it and it works good through my speakers.  I would like to somehow connect my 7 pin DIN plug to this radio.  Any idea how to do that? The reason I want to do that is so I can connect a Sena SM Bluetooth transmitter to that DIN plug and bluetooth the music to my Sena SMH10 headset.