'97 2500 with 213,000 miles. When you turn the key, it has power, but when the clutch is depressed and the key turned to "run", nothing happens. Doesn't even sound like it's trying to start. Under the hood I noticed that the 40 amp "ignition/run" fuse was blown, so I swapped it out and tried to re start the truck, but it blew the fuse again. Any ideas on what it might be? The starter was a replacement a couple years back, and I've replaced the neutral safety switch when I did the starter. Thanks...