Additional Outputs On Quantum Decoders (?)

I have a Proto 2000 RS27 with a Quantum decoder in it. I’d like to add a rotating roof light to this engine. Are there any “auxiliary” output functions on this decoder to control this additional output ? I haven’t taken it apart yet, but it appears as though all the functions are already being used by the factory set lighting and sound.

Is this possible ?

Mark.

Take it apart and look at the board. You might see additional soldering points on the board that are labeled…

David B