I'm not positive, but you may be able to use a non-alarm turn signal module (TSM) from another model H-D, as opposed to the turn signal security module (TSSM)
The one from a Softail would probably not work because it is mounted transversely (90° to bike's centerline) whereas the VRSC's TSSM mounts in line with the centerline. I'm sure the mounting position would affect the bank-angle sensor inside for the self canceling turn signals.