I am also having problems getting my Aeware TSC-55 connected
The Aeware has 4 wires:
Red
Black
Blue
Yellow

I think Red is +, Black is -. But what are the Blue and Yellow wire? One of them is probably background light and the other signal?

Installed is a Highway H250S radio, but this does not seem to work.
I want to install a bluetooth radio for Spotify.
Will a Kenwood bluetooth radio work?
What kind of connection does it need for the Aeware connection?
What brand and type number of radio can it be hooked up to?

Tx