We've streamlined the WOWSound decoder and are proud to introduce the new WOW101 (SKU 1516) decoder. This decoder is less than half as thick as the first version of the WOW decoder and includes all of the same sound functionality. With a 9-Pin JST on the front of the WOW101 it is compatible with any T-Series harness and also includes an auxiliary harness for attaching your speaker, cam, Keep-Alive, and for the additional lighting functions (F3 and f4).