Ground out your electrical system especially lights on the tractor frame , make sure u removed the rust with a wire wheel grinder or a lot of sand paper and a sanding soft block down to bare metal . once rust is removed wipe down bare metal with a acetone or similar product to remove dust , prime paint is a must .two coats kind of thin is better than one thick one, paint with what ever color you desire preferablly JD colors !!! and seal the painted area with a urethane for more rugged use and chipping resistence.