I bought this bike used and after running for a while, I get the overtemp light to come on dim then after a while of sitting it comes on bright sometimes. I have cleaned out the cooling system, changed the temp sensor, changed the thermostat changed the fan temp sensor and still the light will come on dim and sometimes bright. I keep on seeing topics of a service bulletin of a ground added to the instrument cluster to fix the problem. I can't find this service bulletin on line. Does anyone have a copy of this?