Now that I am up and about more, I need to work on the truck. The clutch safety switch is a "moron proof" device Ford stuck on the vehicle to keep a person from trying to start it in gear. If you did do that, it would just lurch and stall. The clutch safety switch has turned out to be one of the worst features of the vehicle. I had an after market switch put in about six months ago, and now it has failed.
I can't find the part on the Ford parts order web page because I don't know the part number and it's not pulling up by key word search. I could, and I think I might, just bypass the switch altogether. There are instructions on how to do so on some of the Ford F250 forums though they are rather vague. Right now, the truck is hard down and I either have to fix it out on the parking pad, or pay $70.00 for a wrecker to come up here and haul it to town, then pay the shop bill. I haven't been really pleased with the shop lately anyway. I've been going to it for thirty years. The old man who owned it originally was a good guy. Now his sons run it, and they are good fellows too, but they really don't want to work on things like trucks. They want to work on sporty cars for rich half way backs. Easier to fix, quicker to fix, more profit.