I have recently bought a Rapido FA unit. Taking off the shell I see the DC unit has a speaker already in it with two wires tracing back to the green board. So if a put a 21 to 9 pin adapter and install the Railpro decoder will I get sound with the way the speaker is already wired. Or will I have to take the two brown wires from the Railpro harness and solder them to the speaker.
Thanks in advance for your thoughts.
David