I installed a Kisan headlight modulator and my intercom picks up a clicking sound in time with the modulation. And it is driving me nuts. I called Kisan and they said they fixed that with a software fix. I got a new model that supposedly has the fix, but it still clicks. Has anyone come across this? I have a ground loop isolator on the aux and a gadget that cleans up the electrical signal, both from Electrical Connections. Those got rid of the alternator whine but not the clicks. Would going to a different modulator brand solve the problem? I am a firm believer in modulators, so ditching it is not an option for me. Any suggestions?