Back lights (park lights) flick on when bike is turned off and key removed. Sometimes just flick on and off again, but sometimes stay on. Help

 

Can't remember if this model had the rocker switch or not for the back up lights.If it does you might start tracing wiring from it. Plus hope it's not ecm related as these things can act in all kinds of strange ways even with the ignition off.Plus might help to check the gear position switch on the transmission. Pull the connector,clean and use some electrical grease.A service manual with a good wiring schematic diagram can help on wire tracing also.2007 Polaris Sportsman 500 Service Manual PDF Download