I have a Schengen unit and have mounted it behind the bull nose on my 89 VR. I attached it to a stainless steel plate to act as a heat sink and ran the red and black wires directly to the battery for best performance. It has been working great for three years. 14.4 volts at idle and 14.8 at higher rpms. Plus the bull nose protects the unit from road debris and has great air cooling behind the nose.