I've had my 665 for 2 years on my 800GS and its been pretty dependable. I've had a few blown fuses ( hardwired to the powerlet/battery tender plug.) but lately it has been cutting out and turning itself off ? I have to hit the power button and it starts up and re-boots so its not the wiring ( I think) . I tried cleaning the connection points with a pencil eraser ( tip I found on-line and cleaned it with a moist towlette but it does not seem to be helping. Could the mount be bad?