I have a 2008 Sportsman 500 HO carb. I have to unplug the harness that plugs into the ECM for the dash to light up and to start it. I purchased and installed a new ECM but had the same problem. I brought it to a mechanic and he found a wire that had come loose. It would start but the dash lights would still go on and off. I tried to start it today and its back to square one. I have to unplug the harness and plug it back in to start it up. The dash cluster doesn’t seem to be working right. Could the dash cluster cause everything to shut down. I unplugged the dash connection and no the atv starts up. Thanks for any help. Neil

I have a 2008 Sportsman 500 HO carb. I have to unplug the harness that plugs into the ECM for the dash to light up and to start it. I purchased and installed a new ECM but had the same problem. I brought it to a mechanic and he found a wire that had come loose. It would start but the dash lights would still go on and off. I tried to start it today and its back to square one. I have to unplug the harness and plug it back in to start it up. The dash cluster doesn’t seem to be working right. Could the dash cluster cause everything to shut down. I unplugged the dash connection and no the atv starts up. Thanks for any help. Neil