The MTX HDWH4 is a custom wiring harness designed to work exclusively with MTX 4-channel MUD Series amplifiers for use with a selection of Harley Davidson motorcycles. This harness is designed to allow easy incorporation of MTX aftermarket speakers and amplifiers without having to modify existing factory wiring. The wiring is easy to connect and uses factory style plugs to ensure proper fit and finish.

The HDWH4 is compatible with Harley Davidson motorcycles from model years 1998-2013 in the following models: Ultra Classic, Electra Glide, Street Glide, Tri-Glide, Road Glide, and Road Glide Ultra. The harness is not designed to work with CVO models.