My dad has a 5085M open station tractor he uses sporadically around the farm. Last week his headlights would not turn off unless he disconnected the battery. We have since figured out if the hood of the tractor is open, the lights will stay off. Once you close the hood, they come back on, regardless of the position of the switch. When the hood is up, the switch operates as normal. Does anyone know if the light switch acts as a ground circuit or a positive circuit? I cannot find any electrical wiring diagrams when searching Google.