1989 with about 241,000 miles. The truck isn't a daily driver, I'll either drive it about twice a week or just around town on the weekends. I drove it to work yesterday, ran like a top, go to get in it this morning and nothing. Just like the title says, no crank, no start, no click. It was about 48 degrees this morning which isn't cold enough to prevent it from doing this. The previous owner went through the injection pump (doesn't mean the work quality was good). I'm new to diesels, so really any information or tips that anyone could provide would be awesome.

 

does the battery have juice? possible ignition switch failure? possible starter failure?