Here is a stumper for ya! So far the Intercom system, passenger has burned out two IMCCOM Headset voice coils. The front, works great. Bike: 2002 Harley Road Glide, factory intercom, 7 pin connections front and back. Controller is tank mounted for setup etc. :57: Ok, since there has been numerous views but no replies, let me ask this to make it simpler. Where is the circuit(s) board or controller that filters the voltage to those connections, is it on the tank or in the radio or both?