I have a John Deere 325 lawn tractor and this winter the snowblower would work on and off, When I switched it to the mower deck I get nothing when I pull the switch to engage the blades. I replaced the switch and still nothing, I checked the connection and the fuses on the side by the ignition and all seemed good. Is there another switch or fuse underneath that may have gone bad? I am not sure what to check next, all help will be greatly appreciated.